Ticket #627 (defect)

Traceback (most recent call last):
  File "petuniald", line 140, in ?
    main()
  File "petuniald", line 136, in main
    petuniald.run()
  File "/home/jonas/Daten/Diplomarbeit/Code/petunial/trunk/source/petunial/_main.py", line 257, in run
    self.__start_gui()
  File "/home/jonas/Daten/Diplomarbeit/Code/petunial/trunk/source/petunial/_main.py", line 222, in __start_gui
    cherrypy.quickstart(petunial.core.gui._dispatcher._Dispatcher(), "/", settings)
  File "/usr/lib/python2.4/site-packages/cherrypy/__init__.py", line 29, in quickstart
    _global_conf_alias.update(config)
  File "/usr/lib/python2.4/site-packages/cherrypy/_cpconfig.py", line 231, in update
    cherrypy.checker.global_config_contained_paths = True
AttributeError: 'module' object has no attribute 'checker'

The checker was moved out of __init__.py in [1541] but _cpconfig.py was not updated to deal with that.