Merge commit 'origin/gallium-0.1' into gallium-0.2

Conflicts:

	src/gallium/auxiliary/util/u_math.c

src/gallium/auxiliary/util/p_debug.c

@@ -136,8 +136,10 @@ void _debug_vprintf(const char *format, va_list ap)
 #elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
    /* TODO */
 #else /* !PIPE_SUBSYSTEM_WINDOWS */
+#ifdef DEBUG
    vfprintf(stderr, format, ap);
 #endif
+#endif
 }