View 3D: Use Z Key for "geometry occlusion" toggle

Note: The header doesn't update until you mouse hover it.

source/blender/editors/space_view3d/view3d_ops.c

@@ -415,6 +415,9 @@ void view3d_keymap(wmKeyConfig *keyconf)
 
 	WM_keymap_add_item(keymap, "VIEW3D_OT_toggle_render", ZKEY, KM_PRESS, KM_SHIFT, 0);
 
+	kmi = WM_keymap_add_item(keymap, "WM_OT_context_toggle", ZKEY, KM_PRESS, 0, 0);
+	RNA_string_set(kmi->ptr, "data_path", "space_data.use_occlude_geometry");
+
 	/* selection*/
 	kmi = WM_keymap_add_item(keymap, "VIEW3D_OT_select", SELECTMOUSE, KM_PRESS, 0, 0);
 	RNA_boolean_set(kmi->ptr, "extend", false);