Don't forget version at the end of setup.py, write it only if changed. This fixes issue159: "python setup.py install" shouldn't write new files in the working dir if one has done "python setup.py build" first.

adding foo
adding bomb
adding a.c
adding dir/a.o
adding dir/b.o
! a.c
! dir/a.o
! dir/b.o
? .hgignore
a.c: unsupported file type (type is fifo)
! a.c