Fix MinGW build broken by integration of 'stdio-consolesafe'

* src/conf_post.h: Avoid redirecting '*printf' functions if
'OMIT_CONSOLESAFE' is defined to 1.
* nt/cmdproxy.c:
* nt/ddeclient.c: Define 'OMIT_CONSOLESAFE' to 1 to avoid
redirecting '*printf functions' to stdio-consolesafe replacements.
* nt/Makefile.in (LIBS_ADDPM): Add -lgnu to link 'addpm' against
Gnulib.  (Bug#79855)

nt/Makefile.in

@@ -139,7 +139,7 @@ EMACS_MANIFEST = @EMACS_MANIFEST@
 WINDRES = @WINDRES@
 
 ## Extra libraries to use when linking addpm.
-LIBS_ADDPM = -lole32 -luuid
+LIBS_ADDPM = -L../lib -lgnu -lole32 -luuid
 
 ## Compilation and linking flags
 BASE_CFLAGS = $(C_SWITCH_SYSTEM) $(C_SWITCH_MACHINE) \

nt/cmdproxy.c

@@ -28,6 +28,10 @@ You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #define DEFER_MS_W32_H
+/* We don't want to use the stdio-consolesafe redefinitions of *printf
+   functions, since (a) that pulls in stdio, which we don't want, see
+   below; and (b) we have our own implementations of *printf here.  */
+#define OMIT_CONSOLESAFE 1
 #include <config.h>
 
 #include <windows.h>

nt/ddeclient.c

@@ -17,6 +17,9 @@ You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #define DEFER_MS_W32_H
+/* We only ever use fprintf for a fixed usage message below, so the
+   stdio-consolesafe module is overkill.  */
+#define OMIT_CONSOLESAFE 1
 #include <config.h>
 
 #include <windows.h>

src/conf_post.h

@@ -397,7 +397,7 @@ extern int emacs_setenv_TZ (char const *);
     : S_ISSOCK (mode) ? DT_SOCK : DT_UNKNOWN)
 #endif /* MSDOS */
 
-#if defined WINDOWSNT
+#if defined WINDOWSNT && !(defined OMIT_CONSOLESAFE && OMIT_CONSOLESAFE == 1)
 # if !defined _UCRT
 #  include <stdarg.h>
 #  include <stdio.h>