Basic working version.

Commiter is still not set to the original committer but this could be done by following
http://stackoverflow.com/questions/18750808/difference-between-author-and-committer-in-git
Implemented the resuming of interrupted conversions.
Better debug info and fixing for simlinks that have been defuncted.
Added accurev diff command and git checkout commands.
Started using diff instead of stat for telling me which files have changed/moved/defuncted etc...