using xlocale to implement std::locale class

[Paolo Carlini]

Hi,
> Not sure what that fail is all about. I'll see what I can figure out.
Thanks. I suspect the issue could be relatively simple and unrelated to 
the actual management of the message catalogs: completely similar tests, 
a few lines before do succeed, only different because involving the 
'plain' messages facet instead of the _byname version. I can't believe 
the issue is very tough, and apparently Francois didn't focus much on 
the _byname version... Please let me know how it goes.
> I've posted a short standalone text program that triggers the bug in 
> the trunk, and applying the rebased patch fixes it. It should be 
> doable to put together a test case for this fix that opens two message 
> catalogs, like the test code, but my testcase-fu is somewhat lacking, 
> could use some help.
Thanks for your help so far, anyway,
Paolo.