Merge pull request #1974 from jbertram/2.3.eap6_3

Maintenance fixes and release for EAP 6.3.x
https://bugzilla.redhat.com/show_bug.cgi?id=1141873 - leak on PagePositionImpl
release 2.3.21.2.Final out of branch 2.3.eap6_3
back to snapshot