Compatibility with older versions

Detailed Description

Files
file	iroot.m
	Calls the IRootLab main GUI.
file	atrtool.m
	Compatibility: calls datatool.m.
file	colors_markers.m
	Calls fig_assert.m.
file	edit_ircode.m
	Bypass to ircode_edit.m.
file	irtools.m
file	irtools_data.m
	Compatibility: calls datatool.m Because the NP paper mentions "irtools_data", this compatibility script is provided to avoid one problem.