Windows specific configuration

Tested on windows server 2008 and Windows seven. Using
c2cgeportal 1.4. I've removed the part about python's library
(PIL, Babel, Shapely, PyWin) because c2cgeoportal use its own.
I've removed the part about fcgid because it exist a module for
Windows now. I've specified that you must install him.
Ask me for more informations.
Merge pull request #941 from camptocamp/doc_windows_setup

Windows specific configuration