Optimization: don't create unnecessary indifferent hashes.
Update job reserver to dynamically use whatever queues are available.

This will make it easier to switch to dynamic
queues without having to change the test much.
Prepare acceptance spec to work with dynamic queue names.
Allow dynamic qless options (such as queue name).
Make symbol table spec more robust.
Clarify the initial queue for a job.
Merge pull request #67 from seomoz/support-dynamic-queue-name

Support dynamic queue name