Fix locale.t for Perls >= 5.10 and < 5.16 on new MacOS X 10.8

[nordicdyno]

locale.t fail in Mac OS X Mountain Lion, because buggy locales

[nordicdyno]

This patch fixes problem with perlbrew on Mountain Lion.
Perl's tests (vers < 5.16) fail on new Mac OS X.

P.S.
I tested this code heavy enough on my Macbook with M.Lion and it had worked pretty well.

[karenetheridge]

This came up today on #pr-challenge. It looks like this is still unmerged?

[bingos]

https://metacpan.org/pod/Devel::PatchPerl#CAVEAT

"Devel::PatchPerl is intended only to facilitate the building of perls, not to facilitate the testing of perls. This means that it will not patch failing tests in the perl testsuite."

I possibly should have rejected it earlier.

A https://metacpan.org/pod/Devel::PatchPerl::Plugin might be a better idea for this.

[karenetheridge]

Ah interesting, a separate thing to patch tests would certainly be very useful, then! I know I've been frustrated in the past by trying to perlbrew old perls and hitting test issues that have been apparently fixed in more recent versions.