Directly check PEB for IsDebuggerAttached

Add constexpr getters to magicdiv class so it can be used from jitted x64/dxbc
Track the guest return address as well for guest/host sync, if multiple entries have the same guest stack find the first one with a matching guest retaddr. this fixes epic mickey 2 (which the previous guest-stack change had allowed to go ingame for a bit) and potentially also a crash in fable3.
Break if under debugger when stackpoints are overflowed

Add much more useful output for host exceptions, print out xenia_canary.exe relative offsets if exception is in module, formatmessage for ntstatus/win32err, strerror

Minor d3d12 microoptimization, instead of doing SetEventOnCompletion + WaitForSingleObject do SetEventOnCompletion w/ nullptr so that the wait happens in kernel mode, avoiding two extra context switches

add unimplemented kernel functions:
ExAllocatePoolWithTag
ObReferenceObject

ObDereferenceObject has no return value.
Log a message when ObDereferenceObject/Reference receive unregistered guest kernel objects
gave ObLookupThreadByThreadId its correct error status
hoist object_types initialization out of ObReferenceObjectByHandle
Fix out parameter values on error for a few kernel funcs
add note about msr to KeSetCurrentStackPointers
add X_STATUS_OBJECT_TYPE_MISMATCH check for xeNtSetEvent
add msr_mask field to X_KPCR

src/xenia/kernel/xthread.h

@@ -70,7 +70,8 @@ struct XAPC {
 // Processor Control Region
 struct X_KPCR {
   xe::be<uint32_t> tls_ptr;         // 0x0
-  uint8_t unk_04[0x2C];             // 0x4
+  xe::be<uint32_t> msr_mask;		// 0x4
+  uint8_t unk_08[0x28];             // 0x8
   xe::be<uint32_t> pcr_ptr;         // 0x30
   uint8_t unk_34[0x3C];             // 0x34
   xe::be<uint32_t> stack_base_ptr;  // 0x70 Stack base address (high addr)