Remove hardcoded (cd) prefix, let Grub figure it out
Bochs-VGA support for palette modes (Doom might require it)
Send EOI to PIC's after initialization
Always set the default gateway in lwIP

The hardcoded values should be used until DHCP says otherwise.
Disable 1GB pages by default (it's not widely supported)
Add a palette-cycling animation to the fbtest
Map from ACPI_PHYS_BASE to end of virtual memory

Avoids hardcoding the 32MB RAM size...
Fix warning