Log Message:
Update devel/ruby-thrift_client package to 0.6.3.

v0.6.3

* Document the :connect_timeout option.
* Add support for specifying client-side timeouts when using FramedTransport
* set transport timeout after connection is established
* Add a method `add_callback` allowing a client to register a block that is
  invoked at a certain event.
* Fixup socket timeouts.