Makefile.am: EXTRA_DIST ordered by LC_ALL=C

Setting order.

Change-Id: I3ae4a7602920e489591892dff2fef460023f933c
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/13092
Reviewed-by: Dan Kenigsberg <danken@redhat.com>