Updated SDL_gpu external for linux32.
Updated SDL_gpu external for linux32.

git-svn-id: 835ae83eb00d9297d8f1e21144e3a107e9f377fd@19 f69afed9-71f0-c812-a9e8-761ac3947e42

cesarl/SCML-pp-Allegro5,cesarl/SCML-pp-Allegro5