MJARSIGNER-16 - Add the option -tsa to the configuration
MJARSIGNER-27 - Use maven-jarsigner 1.1 (migrates to maven-share-utils)
Add some missing @Override and @inheritDoc



git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1541114 13f79535-47bb-0310-9956-ffa450edef68