Increase Shared Memory Transport size to 512k for solaris builds.

Note: "512 is a good compromise between the transport speed and the system memory resources consumed."
Thanks to Jeff Wasilko <jw-mozilla@smoe.org> for the patch.
Bug #118846 r=cls

build/unix/run-mozilla.sh

@@ -388,7 +388,7 @@ ADDON_PATH=${MOZ_DIST_BIN}${ADDON_PATH+":$ADDON_PATH"}
 if [ "$XSUNTRANSPORT" = "" ]
 then 
         XSUNTRANSPORT="shmem" 
-        XSUNSMESIZE="64"
+        XSUNSMESIZE="512"
         export XSUNTRANSPORT XSUNSMESIZE
 fi
 # Font path for Xft