Default DRI driver directory to match X.Org xserver
Since the only valid consumer of the DRI drivers is the X.Org xserver,
this changes the default DRI driver directory to match xorg-server:
${libdir}/dri. The old default of /usr/X11R6/modules/dri was wrong for
nearly all current systems.
diff --git a/docs/autoconf.html b/docs/autoconf.html
index d0f9155..837c92f 100644
--- a/docs/autoconf.html
+++ b/docs/autoconf.html
@@ -178,8 +178,7 @@
<ul>
<li><code>--with-dri-driverdir=DIR</code> - This option specifies the
location the DRI drivers will be installed to and the location libGL
-will search for DRI drivers. The default is
-<code>/usr/X11R6/lib/modules/dri</code>.
+will search for DRI drivers. The default is <code>${libdir}/dri</code>.
</li>
<li><code>--with-dri-drivers=DRIVER,DRIVER,...</code> - This option
allows a specific set of DRI drivers to be built. For example,