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.

+ hg init
+ hg add a
+ hg commit -m commit #0 -d 0 0
+ hg add b
+ hg commit -A -mcomment #1 -d 0 0
removing b
b never committed!
nothing changed