Patch to libstc++: Remove strdup from locale_facets.tcc

[Paolo Carlini]

Jakub Jelinek wrote:

>Aren't these files which are used for libstdc++ compilation only and thus
>it shouldn't matter (wonder why ctype_noninline.h is installed BTW)?
>
(Replying to Loren and Danny too)

OK! In my message I was moved by consistency and, moreover, I was
afraid that sooner or later the other strdup could give problems...

Never mind.

Ciao,
Paolo.