Multiple Changes to make the openthinclient manager ready for the newer java versions

In this pull request I've included multiple commits, targeted at making the openthinclient manager more robust for future versions of the JVM.

This includes:
- Extending the JreFix to all releases beyond 7u25 and 6u51
- Creating a new self signed certificate with extended validity
- Adding the Application-Name MANIFEST.MF header. If this header is not added to the MANIFEST.MF, 7u45 will complain