Changes to how node paths are selected from property, allowing setting a hint.

core/object.h

@@ -85,6 +85,7 @@ enum PropertyHint {
 	PROPERTY_HINT_PROPERTY_OF_INSTANCE, ///< a property of an instance
 	PROPERTY_HINT_PROPERTY_OF_SCRIPT, ///< a property of a script & base
 	PROPERTY_HINT_OBJECT_TOO_BIG, ///< object is too big to send
+	PROPERTY_HINT_NODE_PATH_VALID_TYPES,
 	PROPERTY_HINT_MAX,
 	// When updating PropertyHint, also sync the hardcoded list in VisualScriptEditorVariableEdit
 };