First pass at switching to the unified qless core
Intermediate commit
Intermediate commit
Add missing require.
Intermediate commit
Progress towards feature requests
Remove the spec focusing.
Stub the correct method.
Adding the lockfile
Passing UI specs
Passing max_concurrency test
Added a max_concurrency spec
Grace period support
Now passing qless_spec.rb
When a job times out, kill the child with KILL rather than TERM.

Otherwise, the job will get failed twice: once in the parent, once in the child.
Add a comment to the top of generated files
Add a rake task to build the qless-core lua script.
Commit the built qless lua script to source.
Add a task to verify the qless script.
Use the qless.lua that is in source now.