[Patch/RFA] Further speedup locale::operator==

[Paolo Carlini]

Martin Sebor wrote:

> If invoked like this: ./a.out de_DE fr_FR the program should
> abort on line 15. According to 22.1.1.3, the locale returned
> from locale::combine() has no name.

Exactly. Luckily, for my trivial optimization to work, I don't need
22.1.1.3 to be (too) strictly implemented :-)

Anyway, I'm also aware of another implementation which actually
aborts on line 15... ;-)

> We don't -- intentionally in this case(*) :)

I see... I'm too young ;) to know the details of that. Benjamin knows.

Martin, how can I read the c++std-lib-13439 thread?? Apparently is not
on the archive at ftp.research.att.com yet :(

Paolo.