Issue: Spurious testing flags #1:
Use own flag set on parsing command line options for guardian.
Alter terminology in error to match that from package flag.
Merge branch 'Spurious-testing-flags-#1'

* Spurious-testing-flags-#1:
  Issue: Spurious testing flags #1: Use own flag set on parsing command line options for guardian. Alter terminology in error to match that from package flag.