[PATCH v5 0/2] MR5547: msvcrt: Implement _mbsncpy_s[_l]().

ucrtbase._mbsncpy_s is used by Marvel vs Capcom when trying to create multiplayer lobby. The functions are also present in msvcrt (unlike msvcr70, msvcr71) where I didn't add it because it behaves differently: there is at least one weirdness when it doubles the number of characters to copy ('n' parameter, not buffer size). I suppose we don't need to explore and deal with this specific until something needs those functions from msvcrt. -- v5: msvcrt: Implement _mbsncpy_s[_l](). https://gitlab.winehq.org/wine/wine/-/merge_requests/5547