Originally submitted by Daiju Kito
1. single quote didn't work in several cases
2. os.unlink tries to delete tmpfile when it's called. It won't wait like unix.
The use of the patch name is dangerous when duplicate names exist.
In case of a duplicate name the second patch and all its dependancies
are merged into a single mercurial patch.
The patch identifier (hash) is always unique.
1. removed files were missed
2. hidden files in top directory were not added/removed correctly
3. suppressed spurious warning on adding new files.
4. hg changeset now checked in with original author and date
5. __file__ not supported by pdb.py
