lib/package: Check incompatible licenses at packaging time

Instead of checking for incompatible licenses in the anonymous python
and setting '_exclude_incompatible-', (re)check all the packages in
populate_packages(). This ensures that all packages are processed, even
dynamically generated ones.

The use of the '_exclude-incompatible-' variable set in base.bbclass has
been the mechanism used for per-packages licenses since it was added as
a feature (although with different names for the variable throughout
history). However, since this misses dynamic packages, calling
oe.license.skip_incompatible_package_licenses() a second time on the
actual final package set is a better solution.

(From OE-Core rev: 1816c5a5e724a7f907c9afe4a47b6699ea081ace)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes-global/base.bbclass

@@ -581,7 +581,6 @@ python () {
             if unskipped_pkgs:
                 for pkg in skipped_pkgs:
                     bb.debug(1, "Skipping the package %s at do_rootfs because of incompatible license(s): %s" % (pkg, ' '.join(skipped_pkgs[pkg])))
-                    d.setVar('_exclude_incompatible-' + pkg, ' '.join(skipped_pkgs[pkg]))
                 for pkg in unskipped_pkgs:
                     bb.debug(1, "Including the package %s" % pkg)
             else: