let's not forget our old friend rbconfig.rbo

git-svn-id: http://svn.macosforge.org/repository/ruby/MacRuby/trunk@2603 23306eb0-4c56-4727-a40e-e92c0eb68959

Author: [email protected]

instruby.rb

@@ -247,6 +247,7 @@ def with_destdir(dir)
   install lib, libdir, :mode => $prog_mode unless lib == arc
   install arc, libdir, :mode => $data_mode #if enable_static
   install "rbconfig.rb", archlibdir, :mode => $data_mode
+  install "rbconfig.rbo", archlibdir, :mode => $data_mode
   if CONFIG["ARCHFILE"]
     for file in CONFIG["ARCHFILE"].split
       install file, archlibdir, :mode => $data_mode