stat-time: relax license to LGPLv2+ As discussed here: https://lists.gnu.org/archive/html/bug-gnulib/2012-07/msg00138.html [This was done once before to LGPLv3+, see commit 20e165d.] * modules/stat-time (License): Relax, with consent of all authors. Signed-off-by: Eric Blake <eblake@redhat.com>