port to Lucene 4.6. Tested against the solr-4.6 index of exampledocs xml files.
Changelist:
1. bumped up the version of maven-assembly plugin to the latest
2. added maven-jar plugin which copies all binary dependencies into lib/ subdirectory
3. Fixed AnalyzerToolPlugin to use token stream reset outside while loop over tokens
4. added lock factory handling in FsDirectory (untested)
5. updated trivia in about.xml