Always compile w32image.c on MinGW (Bug#80924)

This enables features unrelated to native image APIs, such as
'w32-export-frame' and 'yank-media', which need to call GDI+
functions.
* configure.ac (HAVE_W32) [!CYGWIN]: Always include w32image.o in
W32_OBJ.
* etc/NEWS: Drop 'yank-media' '--without-native-image-api' caveat.
* src/emacs.c (main):
* src/w32select.c (convert_dibv5_to_png):
* src/w32term.c (w32_draw_image_foreground): Replace
HAVE_NATIVE_IMAGE_API with WINDOWSNT.
* src/w32.c (term_ntproc): Remove redundant HAVE_NATIVE_IMAGE_API guard.
* src/w32fns.c (Fw32_export_frame) [!WINDOWSNT]: Return nil on Cygwin.

configure.ac

@@ -3079,14 +3079,13 @@ if test "${HAVE_W32}" = "yes"; then
     # the rc file), not a linker script.
     W32_RES_LINK="-Wl,emacs.res"
   else
-    W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
+    W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32image.o w32inevt.o w32proc.o"
     dnl FIXME: This should probably be supported for Cygwin/w32 as
     dnl well, but the Cygwin build needs to link against -lgdiplus
     if test "${with_native_image_api}" = yes; then
       AC_DEFINE([HAVE_NATIVE_IMAGE_API], [1],
 	[Define to use native OS APIs for images.])
       NATIVE_IMAGE_API="yes (w32)"
-      W32_OBJ="$W32_OBJ w32image.o"
     fi
     W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
     W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"

etc/NEWS

@@ -4681,9 +4681,7 @@ color Emoji font installed on your system for the 'emoji' script.
 +++
 ** Emacs on MS-Windows now supports 'yank-media'.
 This command inserts clipboard data of different formats into the
-current buffer, if the major mode supports it.  (Support for
-'yank-media' will be unavailable on MS-Windows if Emacs was configured
-'--without-native-image-api'.)
+current buffer, if the major mode supports it.
 
 ---
 ** Emacs on MS-Windows now supports up to 1024 sub-processes.

src/emacs.c

@@ -2362,7 +2362,7 @@ Using an Emacs configured with --with-x-toolkit=lucid does not have this problem
       syms_of_fringe ();
       syms_of_image ();
 #ifdef HAVE_NTGUI
-# if HAVE_NATIVE_IMAGE_API
+# if WINDOWSNT
       syms_of_w32image ();
 # endif
 #endif	/* HAVE_NTGUI */
@@ -2504,7 +2504,7 @@ Using an Emacs configured with --with-x-toolkit=lucid does not have this problem
       globals_of_w32font ();
       globals_of_w32fns ();
       globals_of_w32menu ();
-# if HAVE_NATIVE_IMAGE_API
+# if WINDOWSNT
       globals_of_w32image ();
 # endif
 #endif  /* HAVE_NTGUI */

src/w32.c

@@ -10548,9 +10548,8 @@ term_ntproc (int ignored)
   term_w32select ();
   /* Exit all worker threads of sys_select if necessary.  */
   free_wait_pool ();
-#if HAVE_NATIVE_IMAGE_API
+
   w32_gdiplus_shutdown ();
-#endif
 }
 
 void

src/w32fns.c

@@ -11469,6 +11469,7 @@ Optional arg TYPE should be either `jpeg' (default), `bmp', `png',
 Value is non-nil if FRAME was successfully exported, nil otherwise.  */)
   (Lisp_Object frame, Lisp_Object file, Lisp_Object type)
 {
+#ifdef WINDOWSNT
   struct frame *f = decode_live_frame (frame);
 
   if (NILP (type))
@@ -11494,6 +11495,9 @@ Value is non-nil if FRAME was successfully exported, nil otherwise.  */)
   unblock_input ();
 
   return result >= 0 ? Qt : Qnil;
+#else  /* !WINDOWSNT */
+  return Qnil;
+#endif
 }
 
 

src/w32select.c

@@ -825,7 +825,7 @@ static const char *stdfmt_name[] = {
 static bool
 convert_dibv5_to_png (char *data, int size, char *temp_file)
 {
-#ifdef HAVE_NATIVE_IMAGE_API
+#ifdef WINDOWSNT
   CLSID clsid_png;
 
   if (!w32_gdiplus_startup ()
@@ -859,7 +859,7 @@ convert_dibv5_to_png (char *data, int size, char *temp_file)
   if (status != Ok)
     return false;
   return true;
-#else  /* !HAVE_NATIVE_IMAGE_API */
+#else  /* !WINDOWSNT */
   return false;
 #endif
 }

src/w32term.c

@@ -2109,7 +2109,7 @@ w32_draw_image_foreground (struct glyph_string *s)
 		    compat_hdc, s->slice.x, s->slice.y, SRCCOPY);
 	  else
 	    {
-#ifdef HAVE_NATIVE_IMAGE_API
+#ifdef WINDOWSNT
 	      if (s->img->smoothing && w32_gdiplus_startup ())
 		{
 		  GpGraphics *graphics;