start of work on gearman-based schwartz server.
this way the python and ruby communities can use TheSchwartz via the already-existing Python and Ruby gearman
bindings.
this server will embed its own Danga::Socket-based Gearman::Server, and have a single (or two, but small) child
processes below 'schwartzd' which use the normal Perl/Data::ObjectDriver TheSchwartz.pm to do all the work.
Then there will be some small Python/Ruby TheSchwartz wrappers around the Gearman stuff. Basically Gearman
will be hidden... just used as a protocol.
JSON serialization will be used as the Gearman arg payloads.
