Patch from Dan Scott to move JSON to OpenSRF::Utils::JSON:

Patch from Dan Scott to move JSON to OpenSRF::Utils::JSON:

I noticed back when I was first installing OpenSRF that it includes a
module, JSON.pm, that exists at the root level of the package
directories. This would be fine, except it conflicts with a CPAN
module that is also named JSON, which confuses the CPAN installer when
you check for upgrades and conceivably could lead to a broken system.

I suggested to Mike that it would probably make sense to move the
OpenSRF version of the module into the OpenSRF/Utils/ package
namespace, and he agreed. Of course, there are ramifications
throughout the code, so I've tried to be extra-careful in catching and
correcting all of the places where the use of this module surfaces in
both OpenSRF and Evergreen.

git-svn-id: svn://svn.open-ils.org/OpenSRF/trunk@989 9efc2488-bf62-4759-914b-345cdb29e865