Add some missing renames to 3to4 tool.

MultiplayerPeerExtension isn't an exact replacement for
NetworkedMultiplayerCustom, but at least it gets you moving in the right direction.

Engine.editor_hint couldn't be fixed by the renames map, because you have to add a `()` at the end.

editor/project_converter_3_to_4.cpp

@@ -2268,6 +2268,10 @@ void ProjectConverter3To4::process_gdscript_line(String &line, const RegExContai
 	if (line.contains("_unhandled_key_input(event: InputEventKey)")) {
 		line = line.replace("_unhandled_key_input(event: InputEventKey)", "_unhandled_key_input(event: InputEvent)");
 	}
+
+	if (line.contains("Engine.editor_hint")) {
+		line = line.replace("Engine.editor_hint", "Engine.is_editor_hint()");
+	}
 }
 
 void ProjectConverter3To4::process_csharp_line(String &line, const RegExContainer &reg_container) {

editor/renames_map_3_to_4.cpp

@@ -1082,6 +1082,7 @@ const char *RenamesMap3To4::gdscript_properties_renames[][2] = {
 	{ "files_disabled", "file_disabled_color" }, // Theme
 	{ "folder_icon_modulate", "folder_icon_color" }, // Theme
 	{ "global_rate_scale", "playback_speed_scale" }, // AudioServer
+	{ "global_translation", "global_position" }, // Node3D
 	{ "gravity_distance_scale", "gravity_point_unit_distance" }, // Area(2D/3D)
 	{ "gravity_vec", "gravity_direction" }, // Area(2D/3D)
 	{ "hint_tooltip", "tooltip_text" }, // Control
@@ -1476,6 +1477,7 @@ const char *RenamesMap3To4::class_renames[][2] = {
 	{ "CubeMesh", "BoxMesh" },
 	{ "CylinderShape", "CylinderShape3D" },
 	{ "DirectionalLight", "DirectionalLight3D" },
+	{ "Directory", "DirAccess" },
 	{ "DynamicFont", "FontFile" },
 	{ "DynamicFontData", "FontFile" },
 	{ "EditorNavigationMeshGenerator", "NavigationMeshGenerator" },
@@ -1518,6 +1520,7 @@ const char *RenamesMap3To4::class_renames[][2] = {
 	{ "NavigationPolygonInstance", "NavigationRegion2D" },
 	{ "NavigationRegion", "NavigationRegion3D" },
 	{ "NavigationServer", "NavigationServer3D" },
+	{ "NetworkedMultiplayerCustom", "MultiplayerPeerExtension" },
 	{ "NetworkedMultiplayerENet", "ENetMultiplayerPeer" },
 	{ "NetworkedMultiplayerPeer", "MultiplayerPeer" },
 	{ "Occluder", "OccluderInstance3D" },