Resynchronise cross-*.spec files with gdb.spec by precheckin.sh script.

Signed-off-by: Oleg Girko <oleg.girko@jolla.com>
Fix filename of generated source tarball.

Signed-off-by: Oleg Girko <oleg.girko@jolla.com>
Merge pull request #1 from OlegGirko/master

Two changes made when porting Mer to aarch64.