Add support for Jython

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Bundle Jython support with the application

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Support JRuby as script language

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Bundle JRuby support with the application

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>