* '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

numeric.

* Documentation fixes.