LUCENE-1189: Fixed the QueryParser to handle escaped characters within quoted terms correctly.

Files:
modified: /lucene/java/trunk/src/java/org/apache/lucene/queryParser/QueryParser.jj (try)
modified: /lucene/java/trunk/CHANGES.txt (try)
modified: /lucene/java/trunk/src/java/org/apache/lucene/queryParser/QueryParserTokenManager.java (try)
modified: /lucene/java/trunk/src/java/org/apache/lucene/queryParser/QueryParserConstants.java (try)
modified: /lucene/java/trunk/src/test/org/apache/lucene/queryParser/TestQueryParser.java (try)
modified: /lucene/java/trunk/src/java/org/apache/lucene/queryParser/QueryParser.java (try)