- I've fixed possibles random hangs in DC mode.

- I've fixed hangs in DC mode in (Simpsons, Monkey Island, Pokemon XD, etc)
- I've implemented accurate manage of Pixel Engine Interrupts, now the GPU loop is stopped when a PE Interrupt needs to be managed and resume when Pixel Engine finish,
I think now, the Fifo in DC mode is more accurate than SC mode. :)

Time to close the big fifo Issue 3694 (snif), please if you have a possible fifo issue report this like a game issue.

I was working with Skid_AU together, especially thanks for him.

Test a lot all games, and compare the performance with the master maybe this accuracy has a cost (not a lot).
I think now the fifo is very stable, overflow fixed, random hang fixed, if you have a game with a hang with this rev and not in master please report this.

Source/Core/VideoCommon/Src/PixelEngine.cpp

@@ -468,4 +468,9 @@ void ResetSetToken()
 	}
 	CommandProcessor::interruptTokenWaiting = false;
 }
+
+bool WaitingForPEInterrupt()
+{
+	return CommandProcessor::interruptFinishWaiting  || CommandProcessor::interruptTokenWaiting || interruptSetFinish || interruptSetToken;
+}
 } // end of namespace PixelEngine