Disable Catalyst/Fortran on Windows.

To overcome "No FortranCInterface mangling known" warning being dumped on
Windows machines, we disable checking/enabling of Fortran on Windows for now. If
Fortran/Windows support is needed in future we can investigate it further.

Change-Id: I6e38b7d5e128c39efea6ce65a4c01eefff71d3d4
Merge topic 'catalyst_2.0' into next

5aa913d Disable Catalyst/Fortran on Windows.