CodeHacker: add a writeJar() method including unpatched classes
CodeHacker: add a writeJar() method including unpatched classes

In scenarios when javassist is not an option, we will want to write a
replacement .jar containing the patched classes. This method will help.

Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>

imagej/ij1-patcher