Use sha512 without sparse for script output hashing for now
Use sha512 without sparse for script output hashing for now

(cherry picked from commit 0b2bd1918d8a4f2f2c451e49c34826a5d127bfb6)

uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend