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+Changes in Bitbake 1.9.x:
+        - Add PE (Package Epoch) support from Philipp Zabel (pH5)
+        - Treat python functions the same as shell functions for logging
+        - Use TMPDIR/anonfunc as a __anonfunc temp directory (T)
+        - Catch truncated cache file errors
+        - Allow operations other than assignment on flag variables
+        - Add code to handle inter-task dependencies
+        - Fix cache errors when generation dotGraphs
+        - Make sure __inherit_cache is updated before calling include() (from Michael Krelin)
+        - Fix bug when target was in ASSUME_PROVIDED (#2236)
+        - Raise ParseError for filenames with multiple underscores instead of infinitely looping (#2062)
+        - Fix invalid regexp in BBMASK error handling (missing import) (#1124)
+        - Promote certain warnings from debug to note 2 level
+        - Update manual
+        - Correctly redirect stdin when forking
+        - If parsing errors are found, exit, too many users miss the errors
+        - Remove supriours PREFERRED_PROVIDER warnings
+        - svn fetcher: Add _buildsvncommand function
+        - Improve certain error messages
+        - Rewrite svn fetcher to make adding extra operations easier 
+          as part of future SRCDATE="now" fixes
+          (requires new FETCHCMD_svn definition in bitbake.conf)
+        - Change SVNDIR layout to be more unique (fixes #2644 and #2624)
+        - Add ConfigParsed Event after configuration parsing is complete
+        - Add SRCREV support for svn fetcher
+        - data.emit_var() - only call getVar if we need the variable
+        - Stop generating the A variable (seems to be legacy code)
+        - Make sure intertask depends get processed correcting in recursive depends
+        - Add pn-PN to overrides when evaluating PREFERRED_VERSION
+        - Improve the progress indicator by skipping tasks that have 
+          already run before starting the build rather than during it
+        - Add profiling option (-P)
+        - Add BB_SRCREV_POLICY variable (clear or cache) to control SRCREV cache
+        - Add SRCREV_FORMAT support
+        - Fix local fetcher's localpath return values
+        - Apply OVERRIDES before performing immediate expansions
+        - Allow the -b -e option combination to take regular expressions
+        - Fix handling of variables with expansion in the name using _append/_prepend
+          e.g. RRECOMMENDS_${PN}_append_xyz = "abc"
+        - Add plain message function to bb.msg
+        - Sort the list of providers before processing so dependency problems are 
+          reproducible rather than effectively random
+        - Fix/improve bitbake -s output
+        - Add locking for fetchers so only one tries to fetch a given file at a given time
+        - Fix int(0)/None confusion in runqueue.py which causes random gaps in dependency chains          
+        - Expand data in addtasks
+        - Print the list of missing DEPENDS,RDEPENDS for the "No buildable providers available for required...."
+          error message.
+        - Rework add_task to be more efficient (6% speedup, 7% number of function calls reduction)
+        - Sort digraph output to make builds more reproducible
+        - Split expandKeys into two for loops to benefit from the expand_cache (12% speedup)
+        - runqueue.py: Fix idepends handling to avoid dependency errors
+        - Clear the terminal TOSTOP flag if set (and warn the user)
+        - Fix regression from r653 and make SRCDATE/CVSDATE work for packages again
+        - Fix a bug in bb.decodeurl where http://some.where.com/somefile.tgz decoded to host="" (#1530)
+        - Warn about malformed PREFERRED_PROVIDERS (#1072)
+        - Add support for BB_NICE_LEVEL option (#1627)
+        - Psyco is used only on x86 as there is no support for other architectures.
+        - Sort initial providers list by default preference (#1145, #2024)
+        - Improve provider sorting so prefered versions have preference over latest versions (#768)
+        - Detect builds of tasks with overlapping providers and warn (will become a fatal error) (#1359)
+        - Add MULTI_PROVIDER_WHITELIST variable to allow known safe multiple providers to be listed
+        - Handle paths in svn fetcher module parameter
+        - Support the syntax "export VARIABLE"
+        - Add bzr fetcher
+        - Add support for cleaning directories before a task in the form:
+          do_taskname[cleandirs] = "dir"
+        - bzr fetcher tweaks from Robert Schuster (#2913)
+        - Add mercurial (hg) fetcher from Robert Schuster (#2913)
+        - Don't add duplicates to BBPATH
+        - Fix preferred_version return values (providers.py)
+        - Fix 'depends' flag splitting
+        - Fix unexport handling (#3135)
+        - Add bb.copyfile function similar to bb.movefile (and improve movefile error reporting)
+        - Allow multiple options for deptask flag
+        - Use git-fetch instead of git-pull removing any need for merges when 
+          fetching (we don't care about the index). Fixes fetch errors.
+        - Add BB_GENERATE_MIRROR_TARBALLS option, set to 0 to make git fetches 
+          faster at the expense of not creating mirror tarballs.
+        - SRCREV handling updates, improvements and fixes from Poky
+        - Add bb.utils.lockfile() and bb.utils.unlockfile() from Poky
+        - Add support for task selfstamp and lockfiles flags
+        - Disable task number acceleration since it can allow the tasks to run 
+          out of sequence
+        - Improve runqueue code comments
+        - Add task scheduler abstraction and some example schedulers
+        - Improve circular dependency chain debugging code and user feedback
+        - Don't give a stacktrace for invalid tasks, have a user friendly message (#3431)
+        - Add support for "-e target" (#3432)
+        - Fix shell showdata command (#3259)
+        - Fix shell data updating problems (#1880)
+        - Properly raise errors for invalid source URI protocols
+        - Change the wget fetcher failure handling to avoid lockfile problems
+        - Add support for branches in git fetcher (Otavio Salvador, Michael Lauer)
+        - Make taskdata and runqueue errors more user friendly
+        - Add norecurse and fullpath options to cvs fetcher
+        - Fix exit code for build failures in --continue mode
+        - Fix git branch tags fetching
+        - Change parseConfigurationFile so it works on real data, not a copy
+        - Handle 'base' inherit and all other INHERITs from parseConfigurationFile 
+          instead of BBHandler
+        - Fix getVarFlags bug in data_smart
+        - Optmise cache handling by more quickly detecting an invalid cache, only 
+          saving the cache when its changed, moving the cache validity check into
+          the parsing loop and factoring some getVar calls outside a for loop
+        - Cooker: Remove a debug message from the parsing loop to lower overhead
+        - Convert build.py exec_task to use getVarFlags
+        - Update shell to use cooker.buildFile
+        - Add StampUpdate event
+        - Convert -b option to use taskdata/runqueue
+        - Remove digraph and switch to new stamp checking code. exec_task no longer
+          honours dependencies
+        - Make fetcher timestamp updating non-fatal when permissions don't allow 
+          updates
+        - Add BB_SCHEDULER variable/option ("completion" or "speed") controlling
+          the way bitbake schedules tasks
+        - Add BB_STAMP_POLICY variable/option ("perfile" or "full") controlling
+          how extensively stamps are looked at for validity
+        - When handling build target failures make sure idepends are checked and
+          failed where needed. Fixes --continue mode crashes.
+        - Fix -f (force) in conjunction with -b
+        - Fix problems with recrdeptask handling where some idepends weren't handled
+          correctly.
+        - Handle exit codes correctly (from pH5)
+        - Work around refs/HEAD issues with git over http (#3410)
+        - Add proxy support to the CVS fetcher (from Cyril Chemparathy)
+        - Improve runfetchcmd so errors are seen and various GIT variables are exported
+        - Add ability to fetchers to check URL validity without downloading
+        - Improve runtime PREFERRED_PROVIDERS warning message
+        - Add BB_STAMP_WHITELIST option which contains a list of stamps to ignore when
+          checking stamp dependencies and using a BB_STAMP_POLICY of "whitelist"
+        - No longer weight providers on the basis of a package being "already staged". This
+          leads to builds being non-deterministic.
+        - Flush stdout/stderr before forking to fix duplicate console output
+        - Make sure recrdeps tasks include all inter-task dependencies of a given fn
+        - Add bb.runqueue.check_stamp_fn() for use by packaged-staging
+        - Add PERSISTENT_DIR to store the PersistData in a persistent
+          directory != the cache dir.
+        - Add md5 and sha256 checksum generation functions to utils.py
+
+Changes in Bitbake 1.8.0:
+        - Release 1.7.x as a stable series
+
+Changes in BitBake 1.7.x:
+        - Major updates of the dependency handling and execution
+          of tasks. Code from bin/bitbake replaced with runqueue.py
+          and taskdata.py
+        - New task execution code supports multithreading with a simplistic
+          threading algorithm controlled by BB_NUMBER_THREADS
+        - Change of the SVN Fetcher to keep the checkout around
+          courtsey of Paul Sokolovsky (#1367)
+        - PATH fix to bbimage (#1108)
+        - Allow debug domains to be specified on the commandline (-l)
+        - Allow 'interactive' tasks
+        - Logging message improvements
+        - Drop now uneeded BUILD_ALL_DEPS variable
+        - Add support for wildcards to -b option
+        - Major overhaul of the fetchers making a large amount of code common
+          including mirroring code
+        - Fetchers now touch md5 stamps upon access (to show activity)
+        - Fix -f force option when used without -b (long standing bug)
+        - Add expand_cache to data_cache.py, caching expanded data (speedup)
+        - Allow version field in DEPENDS (ignored for now)
+        - Add abort flag support to the shell
+        - Make inherit fail if the class doesn't exist (#1478)
+        - Fix data.emit_env() to expand keynames as well as values
+        - Add ssh fetcher
+        - Add perforce fetcher
+        - Make PREFERRED_PROVIDER_foobar defaults to foobar if available
+        - Share the parser's mtime_cache, reducing the number of stat syscalls
+        - Compile all anonfuncs at once! 
+          *** Anonfuncs must now use common spacing format ***
+        - Memorise the list of handlers in __BBHANDLERS and tasks in __BBTASKS
+          This removes 2 million function calls resulting in a 5-10% speedup
+        - Add manpage
+        - Update generateDotGraph to use taskData/runQueue improving accuracy
+          and also adding a task dependency graph
+        - Fix/standardise on GPLv2 licence
+        - Move most functionality from bin/bitbake to cooker.py and split into
+          separate funcitons
+        - CVS fetcher: Added support for non-default port
+        - Add BBINCLUDELOGS_LINES, the number of lines to read from any logfile
+        - Drop shebangs from lib/bb scripts
+
+Changes in Bitbake 1.6.0:
+        - Better msg handling
+        - COW dict implementation from Tim Ansell (mithro) leading
+          to better performance
+        - Speed up of -s
+
+Changes in Bitbake 1.4.4:
+        - SRCDATE now handling courtsey Justin Patrin
+        - #1017 fix to work with rm_work
+
+Changes in BitBake 1.4.2:
+        - Send logs to oe.pastebin.com instead of pastebin.com
+          fixes #856
+        - Copy the internal bitbake data before building the
+          dependency graph. This fixes nano not having a
+          virtual/libc dependency
+        - Allow multiple TARBALL_STASH entries
+        - Cache, check if the directory exists before changing
+          into it
+        - git speedup cloning by not doing a checkout
+        - allow to have spaces in filenames (.conf, .bb, .bbclass)
+
+Changes in BitBake 1.4.0:
+        - Fix to check both RDEPENDS and RDEPENDS_${PN}
+        - Fix a RDEPENDS parsing bug in utils:explode_deps()
+        - Update git fetcher behaviour to match git changes
+        - ASSUME_PROVIDED allowed to include runtime packages
+        - git fetcher cleanup and efficency improvements
+        - Change the format of the cache
+        - Update usermanual to document the Fetchers
+        - Major changes to caching with a new strategy
+          giving a major performance increase when reparsing
+          with few data changes
+
+Changes in BitBake 1.3.3:
+        - Create a new Fetcher module to ease the
+          development of new Fetchers.
+          Issue #438 fixed by rpurdie@openedhand.com
+        - Make the Subversion fetcher honor the SRC Date
+          (CVSDATE).
+          Issue #555 fixed by chris@openedhand.com
+        - Expand PREFERRED_PROVIDER properly
+          Issue #436 fixed by rprudie@openedhand.com
+        - Typo fix for Issue #531 by Philipp Zabel for the
+          BitBake Shell
+        - Introduce a new special variable SRCDATE as
+          a generic naming to replace CVSDATE.
+        - Introduce a new keyword 'required'. In contrast
+          to 'include' parsing will fail if a to be included
+          file can not be found.
+        - Remove hardcoding of the STAMP directory. Patch
+          courtsey pHilipp Zabel
+        - Track the RDEPENDS of each package (rpurdie@openedhand.com)
+        - Introduce BUILD_ALL_DEPS to build all RDEPENDS. E.g
+          this is used by the OpenEmbedded Meta Packages.
+          (rpurdie@openedhand.com).
+
+Changes in BitBake 1.3.2:
+        - reintegration of make.py into BitBake
+        - bbread is gone, use bitbake -e
+        - lots of shell updates and bugfixes
+        - Introduction of the .= and =. operator
+        - Sort variables, keys and groups in bitdoc
+        - Fix regression in the handling of BBCOLLECTIONS
+        - Update the bitbake usermanual
+
+Changes in BitBake 1.3.0:
+        - add bitbake interactive shell (bitbake -i)
+        - refactor bitbake utility in OO style
+        - kill default arguments in methods in the bb.data module
+        - kill default arguments in methods in the bb.fetch module
+        - the http/https/ftp fetcher will fail if the to be 
+          downloaded file was not found in DL_DIR (this is needed
+          to avoid unpacking the sourceforge mirror page)
+        - Switch to a cow like data instance for persistent and non
+          persisting mode (called data_smart.py)
+        - Changed the callback of bb.make.collect_bbfiles to carry
+          additional parameters
+        - Drastically reduced the amount of needed RAM by not holding
+          each data instance in memory when using a cache/persistent
+          storage
+
+Changes in BitBake 1.2.1:
+        The 1.2.1 release is meant as a intermediate release to lay the
+        ground for more radical changes. The most notable changes are:
+
+        - Do not hardcode {}, use bb.data.init() instead if you want to
+          get a instance of a data class
+        - bb.data.init() is a factory and the old bb.data methods are delegates
+        - Do not use deepcopy use bb.data.createCopy() instead.
+        - Removed default arguments in bb.fetch
+