6804523: TupleSignatures - Tagged Tuple Verifier Support

[Michael Barker]

> I just posted the updated version of your patch.  Thanks for the contribution.

You're welcome.

> You might be interested in looking at the tagu.patch I posted (which is a WIP).  It shows, roughly, where the cut points have to be for GC support for a new data type.

Thanks, I'll have a dig into that.  I've been a little distracted by a
couple of other things at the moment, so progress has been slow
recently.  My next step is to do a little work on tooling so that I
can write some better tests.  Also I broke javap.

Mike.