mesa: Changes to 'mesa_7_0_branch'

[Michel Daenzer]

 src/mesa/drivers/dri/common/dri_util.c |    3 +++
 1 file changed, 3 insertions(+)

commit diffs at http://gitweb.freedesktop.org/?p=mesa/mesa.git;a=summary

New commits:
commit 8998f52b97caf4e42439085b9ce63d088bfbaa87
Author: Xiang, Haihao <haihao.xiang at intel.com>
Date:   Wed Dec 5 10:31:35 2007 +0800

    Don't Swap buffer if a DRIDrawable is entirely obscured by another window.