how does rw_locales() work on Windows?

[Martin Sebor]

The rw_locales() function defined in the driver invokes the
"locale -a" command regardless of the platform (i.e., including
Windows). When I run tests that invoke the function from within
the IDE they produce errors because the locale utility can't be
found (it's probably not in PATH).

I'm curious: how do others run tests on Windows so that calls
to rw_locales() succeed ? Farid?

Martin