[patch] Add various constants to malloc_info output.

[DJ Delorie]

Florian Weimer <fw@deneb.enyo.de> writes:
> I think this needs to be conditional on USE_TCACHE.

Right, duh.

> By the way, do you know if MALLOC_ALIGNMENT is visible in debugging
> information somewhere (without -g3)?

I wouldn't expect it to, but with all the work towards debugging in gcc
I wouldn't be surprised if it ended up in there anyway.