Support locales with names ending in ".UTF-8" - fixes #28

[bshannon]

No description provided.

[jkbzh]

@bshannon , this patch looks ok.

I'm wondering if it wouldn't be better to provide a configuration option to define the character set / encoding identifier, with a default of NULL. If it is set, then just concatenate that value before the call to setlocale, rather than always assuming a given locale only exists without this parameters or only in UTF-8.

[bshannon]

Most everything is moving to UTF-8 these days, but having an ability to override that
seems like a reasonable enhancement request for someone to implement. I suspect
that the locale names without the .UTF-8 suffix are using some non-UTF-8 charset.
If such a locale exists, it will be used first. That plus the UTF-8 support probably covers
nearly all the interesting cases.

[jkbzh]

Thanks for your PR. I'm closing it without merging due to reasons described in #28