OF-837 PubSub should return non-persistent items (last published item)
OF-189: Remove com.sun.* imports

Also includes a housekeeping item to remove the pack200task.jar (from
OF-560)
Merge pull request #116 from sco0ter/of837

OF-837 PubSub should return non-persistent items (last published item)
https://community.igniterealtime.org/thread/53888

Adding verify the installation configuration change encryption and
secret key encryption.
If there are changes then use the old encryption secret key to decrypt
the original configuration.
With a new encrypted and the encrypted secret key.

I think OF-825 problem has been repaired.
Merge pull request #118 from wmz7year/of825

encryption configuration attributes issue
Merge pull request #117 from tevans/OF-189

OF-189: Remove com.sun.* imports