mesa: Changes to 'master'

[Brian Paul]

 src/mesa/shader/prog_execute.c |  128 ++++++++++++++++++++---------------------
 src/mesa/shader/prog_execute.h |    3 
 src/mesa/swrast/s_fragprog.c   |   23 +++----
 3 files changed, 79 insertions(+), 75 deletions(-)

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

New commits:
commit 999b55663a09d9669a9d14c5aadfa84e6dcba288
Author: Brian <brian.paul at tungstengraphics.com>
Date:   Fri Nov 23 12:01:57 2007 -0700

    Consolidate texture fetch code and use partial derivatives when possible.