Merge branch 'document-python-options'

* document-python-options:
  Changes file update
  Python -newvwm command line option remains undocumented
  Document all the Python command line options
  Python command line options tidyup
  Remove redundant Python options: -nocastmode -nodirvtable -noextranative -nofastproxy
  Tidy up Python command line options help text