RefreshScripts: Do not override Macro_Runner with jar macros

Since version 1.32, ImageJ contains that well-hidden gem that macros
can run from within .jar files by using a special invocation of the
Macro Runner.

In a recent, hurried attempt to patch up Fiji's scripting that was
broken by ImageJ 1.x' introduction of a fundamentally incompatible
(and limited) scripting framework, the support for running macros
from inside .jar files was broken.

This was reported as bug 577 by Jan Eglinger.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge branch 'master' of github.com:fiji/fiji