(svn r10132) -Codechange: split out the last direct video-buffer read access to the blitter-layer

-Add: added a new renderer and blitter to make room for some optimized bpp
-Fix: fill the alpha channel in the grf-spriteloader

source.list

@@ -292,6 +292,8 @@ ai/trolly/shared.cpp
 ai/trolly/trolly.cpp
 
 # Blitters
+blitter/32bpp_simple.cpp
+blitter/32bpp_simple.hpp
 blitter/8bpp_debug.cpp
 blitter/8bpp_debug.hpp
 blitter/8bpp_optimized.cpp
@@ -308,6 +310,8 @@ spriteloader/grf.hpp
 spriteloader/spriteloader.hpp
 
 # Renderer
+renderer/32bpp.cpp
+renderer/32bpp.hpp
 renderer/8bpp.cpp
 renderer/8bpp.hpp
 renderer/null.cpp