Port over changes from XFree86/Mesa 5.0.2, mostly to silence compiler warnings.

src/mesa/tnl/t_pipeline.c

@@ -123,7 +123,9 @@ void _tnl_run_pipeline( GLcontext *ctx )
    GLuint changed_state = pipe->run_state_changes;
    GLuint changed_inputs = pipe->run_input_changes;
    GLboolean running = GL_TRUE;
+#ifdef HAVE_FAST_MATH
    unsigned short __tmp;
+#endif
 
    pipe->run_state_changes = 0;
    pipe->run_input_changes = 0;
@@ -132,7 +134,9 @@ void _tnl_run_pipeline( GLcontext *ctx )
     */
    ASSERT(pipe->build_state_changes == 0);
 
+#ifdef HAVE_FAST_MATH
    START_FAST_MATH(__tmp);
+#endif
 
    /* If something changes in the pipeline, tag all subsequent stages
     * using this value for recalculation.  Inactive stages have their
@@ -155,7 +159,9 @@ void _tnl_run_pipeline( GLcontext *ctx )
       }
    }
 
+#ifdef HAVE_FAST_MATH
    END_FAST_MATH(__tmp);
+#endif
 }