Fix for CAY-1809: Remove 'final' modifier from Cayenne, HessianUtil, PropertyComparator, ConversionUtil, and LinkedDeque

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1468411 13f79535-47bb-0310-9956-ffa450edef68
Added CAY-1809

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1468413 13f79535-47bb-0310-9956-ffa450edef68