[NTOS]: Implement the KiInterruptTemplate in C since we now have a C entrry macro...

[NTOS]: Implement the KiInterruptTemplate in C since we now have a C entrry macro. Add a new KI_HARDWARE_INT flag for the C entry macro to generate the appropriate labels for runtime patching of the KINTERRUPT pointer to work, and issue an absolute instead of relative jmp.
[NTOS]: Remove thousands of lines of assembly that are not needed anymore.
[NTOS]: Put all interrupt code in irqobj.c (platform-specific).
[NTOS]: DPC Interrupt is really the thread scheduler interrupt (DPC work happens in C), which mostly does contexts switching and scheduling decisions, so move it to ctxswitch.S

svn path=/trunk/; revision=45309