Refactor IJ1Helper's runMacro()/runMacroFile() methods
Refactor IJ1Helper's runMacro()/runMacroFile() methods

They repeated code.

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

imagej/imagej-legacy,imagej/imagej-legacy,imagej/imagej-legacy,imagej/imagej-legacy