Allow classes to implement their own equals without HxObject

std/java/internal/IEquatable.hx

@@ -23,9 +23,10 @@ package java.internal;
 
 @:native('haxe.lang.IEquatable')
 @:keep
+@:nativeGen
 interface IEquatable
 {
 
 	public function equals(to:Dynamic):Bool;
 
-}
+}