Contrib modules for win32

Since some of win users were asking me off-list about contrib modules, I
compiled most of them from postgres-8.0.0beta1 sources and uploaded them
here:

http://www.geocities.com/darko_prenosil/index.htm

I had no time to check if every module is working properly, so bugreports
are welcome.
Hope that final win32 installer will include them also.

Regards !