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/package.bbclass

@@ -447,10 +447,6 @@ def gen_packagevar(d, pkgvars="PACKAGEVARS"):
     for p in pkgs:
         for v in vars:
             ret.append(v + ":" + p)
-
-        # Ensure that changes to INCOMPATIBLE_LICENSE re-run do_package for
-        # affected recipes.
-        ret.append('_exclude_incompatible-%s' % p)
     return " ".join(ret)