[Makefile] Add support for pandoc 2 and disable smart extension (closes #16251)

[youtube-dl] / devscripts / install_jython.sh

#!/bin/bash

wget http://central.maven.org/maven2/org/python/jython-installer/2.7.1/jython-installer-2.7.1.jar
java -jar jython-installer-2.7.1.jar -s -d "$HOME/jython"
$HOME/jython/bin/jython -m pip install nose