Much improved optparse usage
Much improved optparse usage

* Provide meaningful usage
* Added statements about defaults for options.
* Use groups to put related options together and get better output,
  allowing to e.g. better identify the debugging options.
* Use default "--version" option mechanics, remove the copyright from
  the output.
* Added "--recurse" allias to "--deep"

wfxiang08/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,tempbottle/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,tempbottle/Nuitka,wfxiang08/Nuitka,wfxiang08/Nuitka,wfxiang08/Nuitka