Fix integrity check for multirepos.
Do not duplicate replacements.
Do not skip file extraction if local and remote files are the same

We still need to extract them to ensure the properly perms, owners and
flags are applied to them
Document CONSERVATIVE_UPGRADE
Bump the manpage date
Remove documentation of digest.txz which does not exists anymore and
remove bogus reference to YAML
Document repository priority
Add the default values for the new parameters
Be consistent, bool should be boolean