Allow loading the Bochs BIOS (very experimental).
VGAEMU fixes so that it can change modes. It works with standard VGA modes,
not VESA modes. You can use it by using a command line option such as
-I 'video { vga vbios_file /usr/share/vgabios/vgabios.bin }'


git-svn-id: https://dosemu.svn.sourceforge.net/svnroot/dosemu/trunk@1116 7758b857-130e-0410-ab9c-d8735a528d18