Patch from Ken Rogoway:

Migrate all of the recent changes into the SDL VS2005 project file.
Fix missing return value in SDL_pixels.c
Fix compile error in testscale.c, variable was incorrectly named.
Added VS2005 project file for testscale

test/testscale.c

@@ -83,7 +83,6 @@ void
 Draw(DrawState *s)
 {
     int w, h;
-    SDL_Rect rect;
 
     SDL_GetWindowSize(s->window, &w, &h);
 
@@ -177,7 +176,7 @@ main(int argc, char *argv[])
         printf("%2.2f frames per second\n", fps);
     }
 
-    SDL_stack_free(drawstate);
+    SDL_stack_free(drawstates);
 
     quit(0);
     return 0;