bug#18360: Modularize recent qsort_r additions

[Eli Zaretskii]

> Date: Sat, 30 Aug 2014 09:39:32 -0700
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: 18360@debbugs.gnu.org
> 
> Eli Zaretskii wrote:
> > That is a different issue, and should not get in our way here.  For
> > the purposes of this bug, can we agree that qsort_r is not needed, and
> > the changes that use it should be reverted to use qsort instead?
> 
> Yes and no.  The previous version did not use qsort, so reverting the 
> changes that use qsort_r will the drop the use of qsort (and qsort_r) 
> entirely.
> 
> One could further *modify* the changes to stop using qsort_r, and to use 
> qsort only.  But what would be the point?  qsort (and qsort_r) are 
> mistakes here; we cannot use them.  Dropping the use of qsort_r would be 
> like wiping the lipstick off a pig.

Then let's use a different sort routine, not qsort.