Removed support for host CPUs without FXSAVE/FXRSTOR support.
Move HMRCA.asm into the switcher code so we don't need VMMRC.rc.
VMM: SELM and VMM early HM init changes.
header (C) fixes
VMM: Switcher and TRPM fixes wrt hypervisor traps and tstVMM.
VMMSwitcher: Drop the unused assembly switcher functions taking guest or host contexts as arguments.
VMM source reorg.