Initial work on nzbfs-extract-rars
More work on rar-extract
Fixed a path issue in rename()
Set dirty bit in file classes
Switch to compressing with zlib instead of gzip
Have scripts use python2 executable
Fixed nzbfs filepath matching

Previously, it would match multiple files that had the same prefix of
the filename.
Properly unlink previous nzbfs file.
Updated README to reference nzbfs-extract-rars
Made RAR filename regex more permissive