pywin32 vista installer fix & general distutils installer name bug

[Ville Vainio]

I just noticed that pywin32 does not work with vista directly (tried
import win32clipboard, => ImportError). The problem is the installer
name; it's the usual

pywin32-210-win32-py2.5.exe

It needs to be renamed to:

pywin32-210.win32-setup-py2.5.exe

In order for vista to catch it as "installer".

We renamed the IPython exe installer to have "setup" to get around the
same issue.

Just posting this for benefit of googlers. I'll complain about this on
distutils-sig as well.