[Twisted-Python] Twisted 2.0 pre-pre release on Windows

[Kevin Dangoor]

Hi,

I ran into two problems installing the Twisted 2.0 core pre-prerelease:

1) the post install script referred to by setup.py does not appear to exist
2) the twisted.python.dist module computed the data_files path with a 
leading "\". So, for example, setup.py tried to copy 
"\twisted\plugins.tml" rather than "twisted\plugins.tml" and couldn't 
find it.

Kevin