Use vgaemubios_file internally to get the Bochs BIOS to avoid mixing up
with using it with console graphics, and be able to run it in a non-root
console.


git-svn-id: https://dosemu.svn.sourceforge.net/svnroot/dosemu/trunk@1812 7758b857-130e-0410-ab9c-d8735a528d18