0.0.gist returns "0" instead of "0.0" but 0.0.perl works as expected

[cognominal]

.perl behaves correctly and a lot of code relies on the current behaviour so it is an open issue
to decide if the change should be adopted in a future version of the language.
My original grief concerned nqp and is irrelevant here.
After discussion I think the change is not worth the trouble.

This has been discussed here
https://colabti.org/irclogger/irclogger_log/perl6-dev?date=2019-10-10#l66https://github.com/MoarVM/MoarVM/pull/1191

Thx for the feedback