*HUGE* set of compiler warning fixes, unused variables removal

based on patch by Dominik Mierzejewski <dominik@rangers.eu.org>

Originally committed as revision 8124 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

postproc/rgb2rgb.c

@@ -13,6 +13,7 @@
 #include "../cpudetect.h"
 #include "../mangle.h"
 #include "../bswap.h"
+#include "../libvo/fastmemcpy.h"
 
 #ifdef ARCH_X86
 #define CAN_COMPILE_X86_ASM