- We now define a much simpler system call interface -- instead of using interrupt...

- We now define a much simpler system call interface -- instead of using interrupt 2E with the system call ID in the ip register, we use the system call ID as the interrupt number! On ARM, all software interrupts have a generic handler, so ANY software interrupt will be a system call, and the interrupt number is the system call ID!
- Removed a bunch more i386-only exports from the ARM kernel.
- Implemented all the READ/WRITE_REGISTER* routines for ARM/PPC.
- Implement half of KiSoftwareInterruptException, which calls KiSoftwareInterruptHandler, which calls KiSystemService. We now reach the first kernel-mode system call! (ZwClose from PspInitPhase0).
- Reformat fastinterlck.c and change the way it's included per-architecture.

svn path=/trunk/; revision=32666