Fix repository cleanup WRT spaces in paths

The code responsible for cleaning up /hackenv between the two executions of a command that wrote to the repository (by parsing 'hg status' output) didn't deal with spaces in file names correctly. This might fix it. Maybe.

--HG--
branch : fizzie/fix-repository-cleanup-wrt-spaces-in-pat-1416396262833
Merged in fizzie/hackbot/fizzie/fix-repository-cleanup-wrt-spaces-in-pat-1416396262833 (pull request #3)

Fix repository cleanup WRT spaces in paths