Extractors - returned types change, exhaustive bug fixes

	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/ExhaustiveAND.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/PigDisambiguator.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/extractor/DisambiguationExtractor.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/extractor/EXTRACT_CONTRIBDATA_GIVENDATA.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/extractor/EX_CLASSIFICATION_CODES.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/extractor/EX_KEYWORDS.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/extractor/EX_TITLE.java
	modified:   disambiguation-author/src/main/java/pl/edu/icm/coansys/disambiguation/author/pig/extractor/EX_YEAR.java
	modified:   disambiguation-author/src/main/pig/exhaustive_AND_test.pig
	deleted:    disambiguation-author/src/main/pig/new_disambiguation_ex_test.pig