[ros-diffs] [ion] 25937: - Fix KiDispatchException to unmask KI_EXCEPTION_INTERNAL when setting the exception code, so that usermode/SEH filters get proper exception codes again. - Fixes and compatible merges from KD Branch: - Add stubs for KdSave, KdRestore, KdDebuggerInitialize0, KdSendPacket, KdReceivePacket to kdcom.dll - Implement and export KeTryToAcquireSpinLockAtDpcLevel. - Add EXCEPTION_RECORD64 and LIST_ENTRY64, KeTryToAcquireSpinLockAtDpcLevel, BREAKPOINT_COMMAND_STRING, Ke386SetCr2, Ke386SetDr3,