* Now with 87% more hot jail action!
* Predeclared all C methods in jail.h, so they could be
arranged in logical order in jail.c
* Fixed the extconf namespace.
* Added rdoc.
* Added usage examples, demonstrating jls, jexec, and jail ruby
equivalents.
* Re-added the "attach and execute within a block" code.
* Added Enumerable and Comparable support.
* Return 'path' as a Pathname object.
TODO:
* Create the actual 'jParallel' shell binary, now that we have a
good backend framework.
* Tests? How?
* Add support for recently committed (will be part of 7.2-RELEASE)
multiple IPs per jail, and jail labels.