desktop-shell: Rename protocol weston_desktop_shell

In the effort of going away from generic names of protocols only
relevant for weston, rename the weston desktop shell
weston_desktop_shell.

This also resets the version to 1, as there will be no prior versions
to weston_desktop_shell.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/desktop-shell/shell.h b/desktop-shell/shell.h
index 041ecd8..2ef23f4 100644
--- a/desktop-shell/shell.h
+++ b/desktop-shell/shell.h
@@ -28,7 +28,7 @@
 
 #include "compositor.h"
 
-#include "desktop-shell-server-protocol.h"
+#include "weston-desktop-shell-server-protocol.h"
 
 enum animation_type {
 	ANIMATION_NONE,
@@ -202,7 +202,7 @@
 	struct wl_listener output_move_listener;
 	struct wl_list output_list;
 
-	enum desktop_shell_panel_position panel_position;
+	enum weston_desktop_shell_panel_position panel_position;
 
 	char *client;