Change to allow setup to continue running on Windows when the compiler available on the windows platform does not match the compiler used to build Python.
Change to allow setup to continue running on Windows when the compiler available on the windows platform does not match the compiler used to build Python.

git-svn-id: 5305e2c1a78737cf7dd5f8f44e9bbbd00348fde7@607 ed100bfc-0583-0410-97f2-c26b58777a21

embray/PyFITS,embray/PyFITS,embray/PyFITS,spacetelescope/PyFITS,spacetelescope/PyFITS,embray/PyFITS