meta/lib+scripts: Convert to SPDX license headers

This adds SPDX license headers in place of the wide assortment of things
currently in our script headers. We default to GPL-2.0-only except for the
oeqa code where it was clearly submitted and marked as MIT on the most part
or some scripts which had the "or later" GPL versioning.

The patch also drops other obsolete bits of file headers where they were
encoountered such as editor modelines, obsolete maintainer information or
the phrase "All rights reserved" which is now obsolete and not required in
copyright headers (in this case its actually confusing for licensing as all
rights were not reserved).

More work is needed for OE-Core but this takes care of the bulk of the scripts
and meta/lib directories.

The top level LICENSE files are tweaked to match the new structure and the
SPDX naming.

(From OE-Core rev: f8c9c511b5f1b7dbd45b77f345cb6c048ae6763e)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 15 insertions, 9 deletions

diff --git a/LICENSE b/LICENSE
index 21fa6e6bdf..d20dc59fb4 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,14 +1,20 @@
 Different components of OpenEmbedded are under different licenses (a mix
-of MIT and GPLv2). Please see:
-
-meta/COPYING.GPLv2 (GPLv2)
-meta/COPYING.MIT (MIT)
-meta-selftest/COPYING.MIT (MIT)
-meta-skeleton/COPYING.MIT (MIT)
+of MIT and GPLv2). See LICENSE.GPL-2.0-only and LICENSE.MIT for further 
+details of the individual licenses.
 
 All metadata is MIT licensed unless otherwise stated. Source code
-included in tree for individual recipes is under the LICENSE stated in
-the associated recipe (.bb file) unless otherwise stated.
+included in tree for individual recipes (e.g. patches) are under 
+the LICENSE stated in the associated recipe (.bb file) unless 
+otherwise stated.
 
 License information for any other files is either explicitly stated 
-or defaults to GPL version 2.
+or defaults to GPL version 2 only.
+
+Individual files contain the following style tags instead of the full license 
+text to identify their license:
+
+    SPDX-License-Identifier: GPL-2.0-only
+    SPDX-License-Identifier: MIT
+
+This enables machine processing of license information based on the SPDX
+License Identifiers that are here available: http://spdx.org/licenses/