ucrt: Move _snwprintf and fwprintf to separate translation units

These are normally only referenced by objects in libmingwex. However,
ntdll also contains the function _snwprintf. Depending on the order that
object files and libraries are linked, this could lead to multiple
definition errors. By moving them to separate object files, they won't
be forcibly included by other symbols.

Signed-off-by: Martin Storsjö <martin@martin.st>
4 files changed