Multiple features not supported on jdk 1.7

Hello, there are multiple features that works on jdk 1.8 but not on jdk 1.7. Since we also support jdk 1.7 on 6.3 they should be working. List of features:

• camel-jbpm
• camel-optaplanner
• camel-pgevent (since R13)
• camel-salesforce
• camel-xstream (already reported here )
• drools-dependencies
• kie-remote-dependencies