EXTRAS-264: Opticks grabs an IDL license even when Scripting Window is disabled

git-svn-id: https://opticks-extras.svn.sourceforge.net/svnroot/opticks-extras/IDL/trunk/future@4262 2d91f92e-8166-0410-902e-d52292f61e86
Added .gitignore files to match svn ignore properties