added MemPool field

src/mesa/main/mtypes.h

@@ -2133,6 +2133,7 @@ struct gl_shader_state
    GLboolean EmitHighLevelInstructions; /**< IF/ELSE/ENDIF vs. BRA, etc. */
    GLboolean EmitCondCodes;             /**< Use condition codes? */
    GLboolean EmitComments;              /**< Annotated instructions */
+   void *MemPool;
 };