Java 6 upgrade.
Java 6 upgrade.

stephenc/analysis-core-plugin,amuniz/analysis-core-plugin,stephenc/analysis-core-plugin,recena/analysis-core-plugin,recena/analysis-core-plugin,jenkinsci/warnings-plugin,stephenc/analysis-core-plugin,jenkinsci/analysis-core-plugin,recena/analysis-core-plugin,amuniz/analysis-core-plugin,jenkinsci/analysis-core-plugin,recena/analysis-core-plugin,jenkinsci/warnings-plugin,amuniz/analysis-core-plugin,stephenc/analysis-core-plugin,jenkinsci/analysis-core-plugin,jenkinsci/analysis-core-plugin,amuniz/analysis-core-plugin,jenkinsci/warnings-plugin