pacman: add file checksum validation against mtree

With libarchive v3.5.0 we have API to fetch the digest from the mtree.
Use that to validate if the installed files are modified or not.

As always, a modified backup file will trigger a warning but will not
result in an actual failure.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

0 files changed, 0 insertions, 0 deletions