Message10282

When returning a str object from Python script to Java using the JSR223 interface, it will be converted to a Java String. It should be converted to Java byte[], since a Python str is really a plain sequence of bytes. The current behaviour is error-prone, for exampe; printing a Java String that is converted from an UTF8-encoded str gives incorrect result.

Python unicode should still be converted to Java String by default, as it is now.