[Distutils] Beta of wininst with uninstaller

[Thomas Heller]

> 
> BTW, one nit I noted: when two packages depend on each other,
> the uninstaller fails to remove the directories of the depending
> package in case the dependent is removed first. Not sure whether
> one can fix this -- package dependencies are a whole new can of 
> worms...
> 
I assume this is because the dependent is in the same directory
or in a subdirectory as the 'parent' package.

I would prefer not to build this into wininst as long as
distutils has no solution for it.

Thomas