Re: [StGit PATCH] Add some performance testing scripts

> find_patchbomb.py: Given a git repo, finds the longest linear sequence
>  of commits. Useful for testing StGit on a real repository.
>
> setup.sh: Creates two test repositories, one synthetic and one based
>  on the Linux kernel repo, with strategically placed tags.
>
> create_synthetic_repo.py: Helper script for setup.sh; it produces
>  output that is to be fed to git fast-import.
>
> perftest.py: Runs one of a (small) number of hard-coded performance
>  tests against a copy of one of the repos created by setup.sh. The
>  initial testcases all involve uncommitting a large number of patches
>  and then rebasing them.