Issue-14 - Solr 4.4 support:

* changed all API related changes to use reflection instead of directly using the old/new API. This allows SolrTextTagger to be used with both Solr 4.3 and Solr 4.4. In fact in Stanbol SolrTextTagger was working fine with Solr 4.2.1 and maybe it even works with 4.1 and 4.0
* commented code that checks for posInc > 1 for both FST generation and tagging. This makes all tests pass for both Solr 4.3 and Solr 4.4.