mesa: Changes to 'master'

[Michel Daenzer]

 src/mesa/drivers/dri/common/dri_util.c       |    2 
 src/mesa/drivers/dri/i915tex/intel_buffers.c |   10 +++-
 src/mesa/drivers/dri/i915tex/intel_context.c |   57 ++++++++++++++-------------
 3 files changed, 39 insertions(+), 30 deletions(-)

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

New commits:
commit 7c42222111d3697ea8d76e3d94d7455c69c7f2d1
Author: Michel Dänzer <michel at tungstengraphics.com>
Date:   Tue Jul 10 11:02:18 2007 +0200

    i915tex: Better procedure for dropping batchbuffer on virtual resolution change.
    
    The previous procedure would often result in a GPU lockup.

commit f1e1b2ed167b63409a88ba489418e407fce68f21
Author: Michel Dänzer <michel at tungstengraphics.com>
Date:   Tue Jul 10 10:54:51 2007 +0200

    i915tex: Only wait for vblank when really necessary.
    
    This avoids superfluous waits for vblank timing out under some circumstances.

commit a903749b246fce26038c66d06fe7eb77daf815ab
Author: Michel Dänzer <michel at tungstengraphics.com>
Date:   Tue Jul 10 10:49:28 2007 +0200

    Clear pointers to freed cliprects.
    
    Not doing this could lead to double frees under rare circumstances.