*include/assert.h: Qualify all functions with __MINGW_NOTHROW.

*include/conio.h:  Likewise.
	*include/ctype.h:  Likewise.
	*include/direct.h:  Likewise.
	*include/dos.h:  Likewise.
	*include/errno.h:  Likewise.
	*include/fenv.h:  Likewise.
	*include/float.h:  Likewise.
	*include/inttypes.h:  Likewise.
	*include/io.h:  Likewise.
	*include/libgen.h:  Likewise.
	*include/locale.h:  Likewise.
	*include/malloc.h:  Likewise.
	*include/mbctype.h:  Likewise.
	*include/mbstring.h:  Likewise.
	*include/process.h:  Likewise.
	*include/search.h:  Likewise.
	*include/setjmp.h:  Likewise.
	*include/signal.h:  Likewise.
	*include/stdio.h:  Likewise.
	*include/stdlib.h:  Likewise.
	*include/string.h:  Likewise.
	*include/time.h:  Likewise.
	*include/wchar.h:  Likewise.
	*include/sys/stat.h:  Likewise.
	*include/sys/time.h:  Likewise.
	*include/sys/timeb.h:  Likewise.
	*include/sys/utime.h:  Likewise.

winsup/mingw/include/dos.h

@@ -74,7 +74,7 @@ struct _diskfree_t {
 #define _DISKFREE_T_DEFINED
 #endif  
 
-_CRTIMP unsigned __cdecl _getdiskfree (unsigned, struct _diskfree_t *);
+_CRTIMP unsigned __cdecl __MINGW_NOTHROW _getdiskfree (unsigned, struct _diskfree_t *);
 
 #ifndef	_NO_OLDNAMES
 # define diskfree_t _diskfree_t