mono/mono — pull request #642 by Ventero (2013-05-19 15:10:14+00:00)
Title: [xbuild] Actually delete common files (CopyLocal) during Clean.

The common files that should be deleted during Clean (see 4c37deb) weren't actually written to the CleanFile, as they were stored in FileWrites after it was already used to create CombinedFileWrites. Thus, after running xbuild /t:Clean, there would be some binary files left over in the output.