allow headers in TAP comments of the form # Test-...
allow headers in TAP comments of the form # Test-...

We already allow

 # Tapper-...: ...
 # Artemis-...: ...

which are for Tapper and its predecessor.
Now we add a generic

 # Test:...: ...

which suits very generic test suites
that also work autonomously outside of
Tapper, like the 'bash-test-utils'.

tapper/Tapper-TAP-Harness