Fix conditional obsolete files entry for WITHOUT_EXAMPLES
Add all the files under /usr/share/examples to the MK_EXAMPLES
section. OLD_DIRS entries are not removed if they're not empty so
prior to this change WITHOUT_EXAMPLES didn't have significant effect
on the updated system.
Submitted by: Dmitry Wagin <firstname.lastname@example.org> (original patch)
MFC after: 1 week