Move xvfb. Add llvmpipe.so.

third_party/xvfb/building/fetch-source

Index: third_party/xvfb/building/fetch-source
===================================================================
--- third_party/xvfb/building/fetch-source	(revision 0)
+++ third_party/xvfb/building/fetch-source	(working copy)
@@ -4,10 +4,9 @@
 # found in the LICENSE file.
 
 # This is here to record where we fetched the source packages.
-
 function getxfromy() {
   if [ \! -f "$1" ] ; then
-    wget "$2"/"$1"
+    wget -O "$1" "$2"/"${3-${1}}"
   fi
 }
 
@@ -33,6 +32,8 @@
           http://xorg.freedesktop.org/releases/individual/xserver
 
 getxfromy libdrm-2.4.26.tar.gz http://dri.freedesktop.org/libdrm
-getxfromy MesaGLUT-7.11.tar.gz ftp://ftp.freedesktop.org/pub/mesa/7.11
-getxfromy MesaLib-7.11.tar.gz ftp://ftp.freedesktop.org/pub/mesa/7.11
+
 getxfromy libXmu-1.0.5.tar.gz http://ftp.x.org/pub/individual/lib
+
+mesa=${MESA_VER-8.0.1}
+getxfromy MesaLib-${mesa}.tar.gz ftp://ftp.freedesktop.org/pub/mesa/${mesa}