[python3] testdoc: Little hack to prevent 2to3 from converting import pythonpathsetter.
[python3] testdoc: Little hack to prevent 2to3 from converting import pythonpathsetter.

userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3