Perforce vcs-helper

Hi, Daniel.

I remember that you posted a vcs-p4 transport helper last year... And
I basically wondered whether or not that is something that you're
still working on. As I understand it, the transport helper framework
will be part of git 1.7, and I thought it would be interesting to test
your code.

The current git-p4 script is nice, of course, but I would much like to
try the "detect branches and integrations" stuff :-)

All the best,
-Tor Arvid-