include: unexport XIstubs.h

The functions declared here aren't used by any driver, so no need to keep
them in the public driver API. Since the whole file isn't included by anybody
outside the xserver tree itself, it doesn't need to be installed at all,
so making it internal and move it to Xi directory.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1325>
(cherry picked from commit 03eb593460)

Xi/XIstubs.h

@@ -26,21 +26,18 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #ifndef XI_STUBS_H
 #define XI_STUBS_H 1
 
-extern _X_EXPORT int
- SetDeviceMode(ClientPtr /* client */ ,
-               DeviceIntPtr /* dev */ ,
-               int /* mode */ );
+int SetDeviceMode(ClientPtr client,
+                  DeviceIntPtr dev,
+                  int mode);
 
-extern _X_EXPORT int
- SetDeviceValuators(ClientPtr /* client */ ,
-                    DeviceIntPtr /* dev */ ,
-                    int * /* valuators */ ,
-                    int /* first_valuator */ ,
-                    int /* num_valuators */ );
+int SetDeviceValuators(ClientPtr client,
+                       DeviceIntPtr dev,
+                       int *valuators,
+                       int first_valuator,
+                       int num_valuators);
 
-extern _X_EXPORT int
- ChangeDeviceControl(ClientPtr /* client */ ,
-                     DeviceIntPtr /* dev */ ,
-                     xDeviceCtl * /* control */ );
+int ChangeDeviceControl(ClientPtr client,
+                        DeviceIntPtr dev,
+                        xDeviceCtl *control);
 
 #endif                          /* XI_STUBS_H */

hw/xfree86/common/xf86Xinput.c

@@ -59,6 +59,7 @@
 #include "xf86Priv.h"
 #include "xf86Config.h"
 #include "xf86Xinput.h"
+#include "XIstubs.h"
 #include "xf86Optrec.h"
 #include "mipointer.h"
 #include "extinit.h"

hw/xfree86/common/xf86Xinput.h

@@ -58,7 +58,6 @@
 #include "inputstr.h"
 #include <X11/extensions/XI.h>
 #include <X11/extensions/XIproto.h>
-#include "XIstubs.h"
 
 /* Input device flags */
 #define XI86_ALWAYS_CORE	0x04    /* device always controls the pointer */

hw/xfree86/sdksyms.sh

@@ -222,7 +222,6 @@ cat > sdksyms.c << EOF
 
 
 /* include/Makefile.am */
-#include "XIstubs.h"
 #include "Xprintf.h"
 #include "closure.h"
 #include "colormap.h"

include/meson.build

@@ -442,7 +442,6 @@ endif
 if build_xorg
     install_data(
         [
-            'XIstubs.h',
             'Xprintf.h',
             'callback.h',
             'client.h',