Fixes #5782: Use the JDK 1.7+ by default on our packages
Merge pull request #524 from Kegeruneku/bug_5782/int/5782_use_correct_java_dependencies

Fixes #5782: Use the JDK 1.7+ by default on our packages
Fixes #5760: Check the Java version before trying to run Jetty
Merge pull request #525 from Kegeruneku/bug_5760/int/5760_detect_unsupported_java_versions

Fixes #5760: Check the Java version before trying to run Jetty