:TRANSFER and :RECONNECT become their own objects so that installers within installers have a place to preserve state for transfer source, dest #160
Rewrote Transfer to support transferring multiple files as a tarball and unpack on the destination

Removed unused process override
Spec'ed the :tarball option
Merge pull request #156 from troelskn/feature-use-tar-for-transferring-multiple-files

Rewrote Transfer to support transferring multiple files as a tarball