Committing some cleanups by avindra:

- fix numerous warnings
- make some variables unsigned
- remove redundant code and header inclusions
- make code more compact in lots of cases

Committing some additional changes by myself:
- additional header cleanups
- cleanup DX11 initialization/shutdown process (hinted at by avindra)
- Remove the cgD3D9 stuff from Externals since it's no longer needed

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5903 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/VideoCommon/Src/Fifo.cpp

@@ -15,8 +15,6 @@
 // Official SVN repository and contact information can be found at
 // http://code.google.com/p/dolphin-emu/
 
-#include <string.h>
-
 #include "VideoConfig.h"
 #include "Setup.h"
 #include "MemoryUtil.h"