doc: (fixes #1215) updated PASS to Wrote example usage for
Currently, when test.py is run, examples are executed and the following is printed when an example is run and exits with a 0 status (success).
[0/790] PASS: TestSuite ...
This is to be changed to give a more informative message such as the following
[0/790] Wrote example usage for ...
This is to be written only when the NS_COMMANDLINE_INTROSPECTION environment variable is set. Please let me know if this is the intended behaviour.