prevent artefacts during video playback.
Fixed VBE mode list code to work together with reading DDC data using VBE
functions.
Fixed data types to muffle compiler.
Fixed requested size of FIFO for image writes. Fixes temporary lockups.
framebuffer formats except cfb and the overlay modes should work, and
r128 and radeon need to be loaded from the ati driver (both issues to
be fixed soon). Tested on i740, s3virge, mach64, tdfx, vesa, and vga
drivers. elfloader users shouldn't be affected.
