Cleanup after previous changes: - there are only two states for the exec bit, so no need to override it. - file_ variable is only once now, so it self.file(f) can be used directly.

\.orig$
\.rej$
~$
\.so$
\.pyc$
\.swp$
\.prof$
^tests/.*\.err$
^build/
^dist/
^doc/.*\.[0-9](\.(x|ht)ml)?$
^MANIFEST$
^\.pc/
^patches/
^mercurial/__version__.py$