Merge branch 'procman'

Merge branch 'procman'

* procman:
  Bugfix: set the catched signal to None *after* calling the signal handler.
  Improve vrrp restorable defaults readability.
  Use procman.restart() to restart vrrp service.
  Add ProcessManager.restart() method to block until the restart is done.
  Use procman to manage vrrp service.
  Bugfix: raise a KeyError, don't return it.
  Bugfix: call ProcessInfo.stop() in the right way (without parameters).
  Bugfix: use self instead of an unbinded pi object when killing a process.
  Remove unused ProcessInfo.last_return attribute.
  Bugfix: use correct module for simbol ECHILD.
  Handle SIGCHLD in PyminDaemon.
  Add a global ProcessManager instance and functions to procman module.
  Implement timer in PyminDaemon using EventLoop signal handling.
  Support general signals handling in EventLoop.
  Replace time.sleep() for signal.pause() in the ProcessManager test.
  Improve ProcessManager to manage registerable named services.
  Add a ProcessManager class to manage processes.
  Improve ProcessManager to manage registerable named services.
  Add a ProcessManager class to manage processes.

Conflicts:

	pymin/eventloop.py
	pymin/pymindaemon.py
	pymin/services/vrrp/__init__.py