Find out why ubuntu compiles are failing.  Find work around.

The __call16 code does a long jump to the interrupt trampolines - this
is unnecessary.

Fix makefiles so that they rebuild the required files automatically.

Make sure gdt/idt tables are properly aligned

Cleanup setting of ES on GET/SET_BDA

Make sure inline assembly isn't preventing inlining of calling
functions.

Convert remaining parts of rombios.c to new code.

Convert rombios32 and apm bios stuff to new code.

Allow one to select adding 32 bit code to 0xf000 or in a separate
location.

Try generating bios tables at compile time.

Move e820 map generation to post time (just have e820 code copy pre
made tables back to user).