GFX:

- FIFO changes - minor cleanup, code organization based on Nolan's changes
- Minor code cleanup
- CommandProcessor changes - Allow BP IRQ clearing for either raising or falling edges.
- Revived old SetFifoIdle code

Gets Pokemon XD to run, but will crash to any CPU-GPU desync. Other games like Metroid Prime, look happy with the new FIFO changes.

Please report any problems.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3984 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/PluginSpecs/pluginspecs_video.h

@@ -21,6 +21,7 @@ typedef unsigned int	(*TPeekMessages)(void);
 typedef void			(*TUpdateInterrupts)(void);
 typedef void			(*TUpdateFPSDisplay)(const char* text); // sets the window title
 typedef void			(*TKeyPressed)(int keycode, bool shift, bool control); // sets the window title
+typedef void            (*TSetFifoIdle)();
 
 enum FieldType
 {
@@ -81,7 +82,7 @@ typedef struct
 	TUpdateInterrupts               pUpdateInterrupts;
     TUpdateFPSDisplay               pUpdateFPSDisplay;
 	TKeyPressed                     pKeyPress;
-
+	TSetFifoIdle                    pSetFifoIdle;
 	SCPFifoStruct                   *pCPFifo;
 	void *pMemoryBase;
 	bool bWii;