bug#63671: Add function to test equality of hash tables

[Joseph Turner]

Mattias Engdegård <mattias.engdegard@gmail.com> writes:

> Thank you, but this seems a bit too specific to your own requirements
> -- maybe you can keep that procedure locally where you need it?

It's no problem to keep the procedure local.

> The standard library must be generally useful with clear semantics.

Would extending `equal' to handle hash tables be generally useful?

Joseph