XMPP4R utf8 patch

#encoding: utf-8
=begin
Copyright 2010 Denis Kokorin <virkdi@mail.ru>

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
=end

require 'rexml/encoding'
require 'rexml/source'
module REXML
  
  # A Source can be searched for patterns, and wraps buffers and other
  # objects and provides consumption of text
  class IOSource
    
    alias  :match_old  :match
    def match( pattern, cons=false )
      @buffer.force_encoding("utf-8")
      match_old( pattern, cons )      
    end
    
  end
end