* refs/pull/22446/head:
relicense LGPL-2.1 code as LGPL-2.1 or LGPL-3.0
COPYING: add reference to a few Apache-2.0 licensed source files
debian/copyright: sync with COPYING
COPYING: LGPL2.1 -> LGPL-2.1
COPYING: extra bits from debian/copyright
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Reviewed-by: Neha Ojha <nojha@redhat.com>
Reviewed-by: Sebastian Wagner <swagner@suse.com>