doxygen fixes.

VMM, Devices: Add interface to query the APIC frequency from the APIC device.

VMM/CPUM/MSRs: when returning the APIC base, don't rely upon the CPUID feature bits but check if a Local APIC is present

PDMLdrEnumModules: Replaced fRc with a enmCtx so we don't load ring-3 modules into the ring-0 address host space.

VMM: Facility for getting the highest-priority pending interrupt from the APIC device.

PDM,PGM,DevEFI,DevACPI,DevPcBios: Added memory setup phase after construction and reset to solve PGM/PDM reset order issue (PDM first, then PGM, only that wasn't possible previously since PDM reset would plant stuff in guest RAM).

PDM,++: Change APIs used by Main from PVM to PUVM.

VMM: APIC refactor. Moved APIC base MSR to the VCPU (where it belongs) for lockless accesses.

Working on tracking IRQs for tracing and logging purposes.

VMM/PDM: Some simple tracepoint infastructure.

VMM,Devices: Automatically use a per-device lock instead of the giant IOM lock. With exception of the PIC, APIC, IOAPIC and PCI buses which are all using the PDM crit sect, there should be no calls between devices. So, this change should be relatively safe.

fix OSE