removing duplicate impls

[Rob Landley]

On Thursday 11 December 2008 09:51:47 Bernhard Reutner-Fischer wrote:
> Let's leave the complete libpthread/* out of this particular discussion
> for now.
>
> As for the rest, i currently don't have a strong opinion on which
> of the old or new variants to keep, which malloc impl (of the 3) to
> drop. I'm open to suggestions.

I didn't think the malloc implementations were "old" and "new", I thought the 
malloc implementations are small/slow, large/fast, and a medium.

Also, I don't believe any of them are currently broken, or that they're 
particularly difficult to maintain.  (Unlike the threading libraries, which 
are a pain to debug at the best of times because most problems you have with 
them are race conditions you can't reliably reproduce.)

Rob