Revert "Redoing the way we handle vertex shaders for the draw module."

This reverts commit 6dcfddb8e2.

src/mesa/state_tracker/st_program.h

@@ -79,6 +79,10 @@ struct st_vertex_program
    /** The program in TGSI format */
    struct tgsi_token tokens[ST_FP_MAX_TOKENS];
 
+#if defined(__i386__) || defined(__386__)
+   struct x86_function  sse2_program;
+#endif
+
    /** Pointer to the corresponding cached shader */
    const struct cso_vertex_shader *vs;