This is useful for winelib applications that don't use -fshort-wchar.
They may use u"" for string literals and u16string. However, C++ has
builtin char16_t type, so we need WCHAR to be compatible with that.
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>