SLING-2745 fixed.

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1449599 13f79535-47bb-0310-9956-ffa450edef68
SLING-2747 fixed. Added hashCode and fixed first and last char check.

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1449600 13f79535-47bb-0310-9956-ffa450edef68