Remove all wayland-server.h includes

The documentation for wayland-server.h says:

> Use of this header file is discouraged. Prefer including
> wayland-server-core.h instead, which does not include the server protocol
> header and as such only defines the library PI, excluding the deprecated API
> below.

Replacing wayland-server.h with wayland-server-core.h allows us to drop the
WL_HIDE_DEPRECATED declaration.

backend/backend.c

@@ -5,7 +5,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/backend/drm.h>
 #include <wlr/backend/headless.h>
 #include <wlr/backend/interface.h>

backend/drm/backend.c

@@ -4,7 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/backend/interface.h>
 #include <wlr/backend/session.h>
 #include <wlr/interfaces/wlr_output.h>

backend/drm/drm.c

@@ -12,7 +12,7 @@
 #include <string.h>
 #include <strings.h>
 #include <time.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wayland-util.h>
 #include <wlr/backend/interface.h>
 #include <wlr/interfaces/wlr_output.h>

backend/rdp/keyboard.c

@@ -1,5 +1,5 @@
 #include <stdlib.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/types/wlr_input_device.h>
 #include <wlr/types/wlr_keyboard.h>
 #include <wlr/interfaces/wlr_keyboard.h>

backend/rdp/output.c

@@ -2,7 +2,7 @@
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 #include <stdlib.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/types/wlr_output.h>
 #include <wlr/interfaces/wlr_output.h>
 #include <wlr/util/log.h>

backend/rdp/pointer.c

@@ -1,7 +1,7 @@
 #define _POSIX_C_SOURCE 200809L
 #include <stdlib.h>
 #include <string.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/types/wlr_input_device.h>
 #include <wlr/types/wlr_pointer.h>
 #include <wlr/interfaces/wlr_pointer.h>

backend/session/direct-freebsd.c

@@ -13,7 +13,7 @@
 #include <sys/types.h>
 #include <termios.h>
 #include <unistd.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/backend/session/interface.h>
 #include <wlr/util/log.h>
 #include <xf86drm.h>

backend/session/direct.c

@@ -14,7 +14,7 @@
 #include <sys/stat.h>
 #include <sys/sysmacros.h>
 #include <unistd.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/backend/session/interface.h>
 #include <wlr/util/log.h>
 #include "backend/session/direct-ipc.h"

backend/session/logind.c

@@ -9,7 +9,7 @@
 #include <sys/stat.h>
 #include <sys/sysmacros.h>
 #include <unistd.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/backend/session/interface.h>
 #include <wlr/config.h>
 #include <wlr/util/log.h>

backend/session/noop.c

@@ -3,7 +3,7 @@
 #include <stdbool.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/backend/session/interface.h>
 #include <wlr/util/log.h>
 #include "util/signal.h"

backend/session/session.c

@@ -6,7 +6,7 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <wlr/backend/session.h>
 #include <wlr/backend/session/interface.h>
 #include <wlr/config.h>

backend/wayland/backend.c

@@ -5,7 +5,7 @@
 
 #include <wlr/config.h>
 
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 
 #include <wlr/backend/interface.h>
 #include <wlr/interfaces/wlr_input_device.h>

backend/x11/backend.c

@@ -10,7 +10,7 @@
 #include <wlr/config.h>
 
 #include <X11/Xlib-xcb.h>
-#include <wayland-server.h>
+#include <wayland-server-core.h>
 #include <xcb/xcb.h>
 #include <xcb/xfixes.h>
 #include <xcb/xinput.h>