qa/new: additional features
qa/new: additional features

- more helpful usage message
- new -r option to reserve a test id (and create skeletal files to be
  updated later)
- create skeletal id.out if not already there
- gid add the new test script and output file

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp