- added directx include path to VS2008 solution

- updated shape vcproj and add it to VS2008 solution
- minor changes (i.e. typecasting) to get rid of compiler warnings in VS

test/testdraw2.c

@@ -234,7 +234,7 @@ main(int argc, char *argv[])
         SDL_RenderClear();
     }
 
-    srand(time(NULL));
+    srand((unsigned int)time(NULL));
 
     /* Main render loop */
     frames = 0;