This includes some utility functions for dealing with groups of packages
defined in the metadata. Metadata syntax:
PACKAGE_GROUP_<group> = "<list of packages>"
If the packages in the group are optional:
PACKAGE_GROUP_<group>[optional] = "1"
(From OE-Core rev: 4df212e9c2a1dd7c80d180fd13b67e9f2799d3e1)
Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>