new python packages lockfile and daemon

python lockfile and python daemon are now used by airboss
commands: new rewritten version of Airboss

- new db APIs
- it now uses daemon.runnner from the python library
- it now uses SocketServer.TCPServer for implementing
  server socket waiting

For the time being it uses a single thread (mysql gives lots of
disconnect under heavy load with multithreading)

Currently on a quad core 3.6 xen E5 with 4GB of ram it can handle
20 requests "list mac" in ~6 seconds