* moldname.def.in (__MSVCRT__): Replace with !(__CRTDLL).

	* moldname.def.in (__MSVCRT__): Replace with !(__CRTDLL).
	(wpopen): Add if !(__CRTDLL).
	* Makefile.in (moldname-msvcrt.def rule): Use -C, not -c to
	preserve comments.
	(moldname-crtdll.def rule): Likewise.
	* moldname-msvcrt.def: Regenerate.
	* moldname-crtdll.def: Regenerate.
	* include/stdio.h (wpopen):Use prototype, not a define.
	(_swnprintf): Add prototype.
	(_vswnprintf): Likewise.
	Tidy up whitespace.
	* include/wchar.h (_swnprintf): Add prototype.
	(_vswnprintf): Likewise.
	Tidy up whitespace.