- snip% now implements equal<%>
its equal-to? delegates to other-equal-to?.
- snip%'s other-equal-to and equal-hash-code and
equal-secondary-hash-code all just amount to using eq?. The
setup is here just to make snip% be the one that declares
that it implements equal<%> so that various snips can adjust
other-equal-to? (and the hash code methods)
- image-snip% no longer implements equal<%>
(but it extends snip% and it overrides other-equal-to?
and the hash-code methods to do what they always did)
2f009ca529
