[JENKINS-37565] - Upgrade source level to Java 7 in remoting 3 (#103)
[JENKINS-37565] - Upgrade source level to Java 7 in remoting 3 (#103)

* [JENKINS-37565] - Upgrade source level to Java 7

This change does not update the code to the Java7 style, but we will do it later

* Pick the 1.37 release

jenkinsci/remoting,oleg-nenashev/remoting,jenkinsci/remoting,oleg-nenashev/remoting