Omit number separators from C locale in tests.
Omit number separators from C locale in tests.

Qt 5.6 changes behavior to omit the separator.  Pre-empt that by
omitting it now in the tests and adjust the locale setting to use the
5.6 behavior even with 5.5.

cutelyst/grantlee,cutelyst/grantlee,cutelyst/grantlee,cutelyst/grantlee,cutelyst/grantlee