bz1311954 - multilib variations in LC_COLLATE files, with fixes

[Florian Weimer]

* Carlos O'Donell:

> On 3/21/19 12:09 AM, DJ Delorie wrote:
>> "Carlos O'Donell" <codonell@redhat.com> writes:
>>> Very minor. Thanks, I think this means that using 50% is the simplest
>>> and easiest option then. Care to post patches that use 50% with >> ?
>> 
>> iconv, localedef: avoid floating point rounding differences
>
> This is a user-visible bug and so needs a bugzilla entry, please create
> one, and reference the ml discussion, and reference it here.

I brought this one up on the libstdc++ list as well:

  <https://gcc.gnu.org/ml/libstdc++/2019-03/msg00088.html>

I think with the C++ hashtables, the impact is mostly visible with the
iteration order.