(svn r13639) -Codechange: rewrite 32bpp-anim and 32bpp-optimized drawing and encoding so it uses similiar scheme as 8bpp-optimized

All zoom levels are stored and a kind of RLE is used. Together with further changes and reducing number of variables, drawing is ~50% faster in average.

src/blitter/32bpp_anim.hpp

@@ -34,6 +34,8 @@ public:
 	/* virtual */ Blitter::PaletteAnimation UsePaletteAnimation();
 
 	/* virtual */ const char *GetName() { return "32bpp-anim"; }
+
+	template <BlitterMode mode> void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
 };
 
 class FBlitter_32bppAnim: public BlitterFactory<FBlitter_32bppAnim> {