Upstart 1.6 released
* 'telinit u' now performs a stateful re-exec, allowing
Upstart to continue to supervise jobs after an upgrade
of either itself, or any of its dependent libraries.
Adds dependency on libjson (JSON-C).
* Added initramfs-less boot support.
* Allow tests to work in sbuild environment.
* Improved error handling.
* Fixed crasher if 'kill signal' specified as a particular
* Documentation fixes.