Upgrade to the head of the tree version.
new xl2tpd
Update ruby-highline to 1.6.20

Changes:
* Fixed a bug with FFI::NCurses integration (by agentdave).
* Improved StringExtensions performance (by John Leach).
* Various JRuby fixes (by presidentbeef).
Note update of ruby-highline
Update ruby-commander to 4.1.6

Changes:
* Respect environment setting for $LESS
* Add ability to hide trace flags and globally enable tracing
Note update of ruby-commander