Made "Map Device" function to always fail.
It turned out we dont support that functionality, it just didn't return
the error. We can't support that before the .nopage method is implemented
for /dev/mem VMAs in the kernel.
Changed the DPMI caps again.


git-svn-id: https://dosemu.svn.sourceforge.net/svnroot/dosemu/trunk@895 7758b857-130e-0410-ab9c-d8735a528d18