Log Message:
Update ruby-libxml to 2.3.0.

= Release History

== 2.3.0 / 2012-02-22 Ryan Johnson

* Add ability to insert new PI-nodes into the xmltree (Axel Struebing).

* Added full pass-through access to libxml2 xmlC14NDocDumpMemory method via
  LibXML::XML::Document#canonicalize method with optional arguments.

* Added full test data for C14N based off of W3C spec.
  (http://www.w3.org/TR/xml-c14n#Examples)

* Update sax handler to support encodings on Ruby 1.9 and higher.