Perl interface to git-annex repositories

 Perl interface to git-annex repositories, and some scripts which make
 use of this interface. Requires git-annex installed to be useful.
 .
 Git::Annex -- class representing a git-annex repository
 .
 annex-to-annex -- use hardlinks to migrate files between git annex repos
 .
 annex-review-unused -- interactively process `git annex unused` output