[v6.d REVIEW] DSETEM in .tap block signature error
[v6.d REVIEW] DSETEM in .tap block signature error

DSETEM = "Do Not Spec Exact Text of Error Messages". These proved
of little value and were interfering with readability changes
in 6.c. Keep these in Rakudo's tests for now. If other impls need
it, we can always do an Appendix set of tests to the spec that impls
can optionally follow.

Moved to rakudo https://github.com/rakudo/rakudo/commit/42d7d74d1e
Orig: https://github.com/perl6/roast/commit/046e0bfdf96969aab25020fa6c85b0c164a85738

perl6/roast,dogbert17/roast,dogbert17/roast