Optimized; No longer use DBI->connect_cached, just assume dbh good for
connection length.
Added some SQL function implementations and centralized similar QueueTest
module implementations into named modules that are symlinked to.
Added option to auto-ack (no_ack)
Make sequential test a bit more extensible
Added a Net::RabbitMQ test using a consumer, and renamed older test.
Re-worked test program, and how opts are passed to implementations.
Test configs are arbitrary and driven through command line args.