Remove a bit about mozjs from HACKING

 $ make test

As of the time of writing, the Javascript library that mw uses is bundled in

with the source tree and will be built the first time you run this command.

This can take a while on a slow machine but it will only need to be done once

unless the mozjs directory is cleaned.

In order to build mw you will need the build dependencies installed on your

system. The best way to find out what these currently are is to look at the

build requirements listed in the RPM spec file 'mw.spec' at the top of the