This test fails for MinGW, probably because its CRT doesn't use the same locale names as MSVC CRT. Just disable it for now, as it was already disabled for non-MSW platforms. Also use LocaleSetter class (extracted from CLocaleSetter) to change the locale for this test duration only to avoid affecting any tests running after it. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65743 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775