This is a regression in functionality and performance, but a much better
foundation for the future of the project (I think). It can run basic
apps under an SSA interpreter but doesn't support some of the features
required to do real 360 apps yet.
Now only 512MB is committed on startup. Loaded XEXs are placed into their
required addresses in the 0x8... range. Kernel structures are allocated
from the normal heap like other data. There should no longer be any magical
pointers.
