Log Message:
Add the following patch from upstream as a new distribution
patch and bump MesaLib's PKGREVISION.  While here, make a few
small changes to appease pkglint.

commit 2b8d8989fb6f9c36baf166fc715182a1407ebadb
Author: Ian Romanick <ian.d.romanick@intel.com>
Date:   Sun Sep 28 20:31:46 2008 -0700

    Use 3Dnow! x86-64 routines only on processors that support 3Dnow!
    Added an x86-64 CPUID function and use it to detect 3Dnow!
    [...]
    This fixes long standing bug #8724.