Minor release upgrades:

Apache CXF 2.7.11-2.7.12
Apache CXF.XJCPlugins 2.6.1-2.6.2
Apache Santuario 1.5.6-1.5.7
Apache WSS4J 1.6.15-1.6.16
Merge pull request #6621 from Gonthim/master

Upgrade to Apache CXF 2.7.12