[COMMIT] Import Edward O'Connor's json.el

[Edward O'Connor]

Aidan Kehoe writes:

> Ted, this makes your json.el more easily available to XEmacs users. Included
> is a tweak to have it better work on non-Mule XEmacs invocations.

Great, thanks! I've included your patches in the upstream version.

Stephen J. Turnbull wrote:

> VETO
>
> Get this OUT of net-utils!

I don't know how the XEmacs package system is organized, but is there
some place more appropriate for json.el to go? Sorry if this has
already been taken care of -- I'm just now catching up on a fairly
ridiculous amount of back email.


Ted