Allow to get the directory usage ("du") of a directory.
Use a random directory for the temporary unpacking.
Prevent a possible NPE.
Add a way to obtain enabled server plugins by type (e.g. only alert sender plugins)
Add a intentional changes file to record the latest method addition.
update logging and aggregation defaults
BZ 1057300 - Add supporting classes that allow the usage of Oracle 12c database.
[BZ 1066060] - "Cannot store preferences" message with a Read Only user - The custom date range UI component that uses user's preferences were lazily instantiated -> when user logged out and logged in the same cached instance was returned and it caused the exception. I've added the method that invalidates the cached singleton instance in user session manager login callback so we can still save some resources by doing it lazily, but at the same time if a new user logs in it gets its own preferences.
[BZ 1068789] - rhq scripts won't work in Ubuntu derived distributions - Using only shell commands from posix standard sub set, because on Debian based distros the /bin/sh points to Dash that had problems with the previous version.