D-Programming-Language/druntime — pull request #323 by jmdavis (2012-10-13 20:53:48+00:00)
Title: Added note to equals_t and hash_t.

Apparently, some people are mistakenly thinking that they should be
using these rather than bool and size_t (TDPL doesn't even mention
equals_t and hash_t), so it seems that a note about them being only
meant for backwards compatability is in order.