New disambiguation implementation start, udf tools.

	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/features/disambiguators/DisambiguatorFactory.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/UdfTools.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/extractor/EXTRACT_SNAME_DOCUMENT_METADATA.java
	modified:   disambiguation-author/src/main/pig/new_disambiguation.pig