mesa: Changes to 'mesa_7_0_branch'

[Brian Paul]

 progs/demos/engine.c  |    4 ++++
 progs/xdemos/Makefile |   25 ++++++++++++++++++-------
 progs/xdemos/shape.c  |    1 -
 3 files changed, 22 insertions(+), 8 deletions(-)

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

New commits:
commit 834decdaaeb33402e0a54b81285f2e6a13c518b2
Author: Brian <brian.paul at tungstengraphics.com>
Date:   Tue Jan 22 07:56:31 2008 -0700

    Don't build yuvrect_client by default
    
    Added 'extra' rule to build optional yuvrect_client, shape, xdemo programs

commit 18b2d83173a0db1bd95d545cd6872826559dd081
Author: Brian <brian.paul at tungstengraphics.com>
Date:   Tue Jan 22 07:54:37 2008 -0700

    remove unused var

commit 30c65c3c62b4cbe3ba9a79db2b0ed8248072047d
Author: Alexey Sokolov <sokolov at truebsd.org>
Date:   Tue Jan 22 07:42:40 2008 -0700

    define M_PI if needed