Using LILO without running VGABIOS on ADLO.

[Heechul Yun]

I've extended my serial debug patch to see entire vga text console message
(printed via int10 vgabios service routine) on the serial temrnial.

I needed this because I don't want run vgabios (due to it took several
seconds) but I want to use lilo as a boot loader. Therfore, I skipped
VGABIOS and handled int10 service to direct messages to serial console.

As a result, I can use lilo instead of etherboot without performance
degradation caused by running vgabios. I think this might be useful for
those who don't need VGA text console or have problem with running VGABIOS,
but want to use lilo or grub as a boot loader.

Regard,
Heechul.