macros: Changes to 'master'

[Alan Coopersmith]

 xorg-macros.m4.in |   24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

New commits:
commit ef7824119ede1d491936ef1715296b47419f4c9c
Author: Alan Coopersmith <alan.coopersmith at oracle.com>
Date:   Mon Apr 25 20:26:48 2011 -0700

    Create XORG_COMPILER_BRAND macro to centralize compiler checks
    
    Check for gcc vs. intel vs. sun in one place, instead of
    continuing to grow more places the check is replicated.
    
    Add clang check here too, as it's now seeing a lot of use to build X.
    
    Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
    Reviewed-by: Jeremy Huddleston <jeremyhu at apple.com>
    Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
    Reviewed-by: Gaetan Nadon <memsize at videotron.ca>