Update documentation for classes split

* Make reference to meta/classes* instead of just meta/classes
* Update each reference to the path where the class has moved
* Add a brief explanation to the classes reference explaining the split
* Add a note to INHERIT, INHERIT_DISTRO, IMAGE_CLASSES and USER_CLASSES
  variable glossary entries mentioning where the specified classes must
  be located. I contemplated adding the same note to PACKAGE_CLASSES
  but decided against it, as it has a very specific usage and such a
  note might distract from the narrative of that entry.
* Also trim the IMAGE_CLASSES entry which was quite outdated.
* INHERIT += no longer works with testimage so drop the note about that

(From yocto-docs rev: e76bed00b452d3049f6c22afbfb980b557a141bd)

Signed-off-by: Paul Eggleton <paul.eggleton@microsoft.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/documentation/ref-manual/tasks.rst b/documentation/ref-manual/tasks.rst
index d4408d1422..b17c09cdc4 100644
--- a/documentation/ref-manual/tasks.rst
+++ b/documentation/ref-manual/tasks.rst
@@ -190,8 +190,8 @@ that either directly or indirectly depend on the installed files (e.g.
    -  The ``cp`` command with the ``--no-preserve=ownership`` option.
 
    -  The ``tar`` command with the ``--no-same-owner`` option. See the
-      ``bin_package.bbclass`` file in the ``meta/classes`` directory of
-      the :term:`Source Directory` for an example.
+      ``bin_package.bbclass`` file in the ``meta/classes-recipe``
+      subdirectory of the :term:`Source Directory` for an example.
 
 .. _ref-tasks-install_ptest_base: