Work with output

[xendk]

The output could use some work, it's a bit odd that tearoff and apply got pretty similar output.

All commands should probably have a summary message at the end such as "Patches de-applied.", "Project now a git repo.", etc.

Secondly "Patching X with Y..." is a bit too generic. While tearoff do patch the clone, the end result is to remove patches. "Processing" would be a more applicable generic term, but we might still want to use "Patching" when, well, patching and applying.

Thirdly, "Cloning a working copy" could be better than "Cloning".

Diff could do a "No differences found." using drush_log().