First working version of the indexer and searcher
	- hacked the indexer to extract contributor from xml file and index that field
	- switched to apache commons-cli 1.2 package for cmd line arg parsing
	- added a searcher app
	- got rid of some fields that were indexed in lucene benchmark code
	- added WikipediaAnalyzer to work with factory WikipediaTokenizer so that the markup is tokenzied before indexing