Comment 7 for bug 1617281

Just a reminder: 'realpath' is not provided by the OS.

[ Yes, one could write a bash function as substitute, or require coreutils (or a custom version of just 'realpath') installed via a package manager available on OS X (though then again if the user already has to use a package manager like homebrew, macports or fink for the cli launcher script: why not also install inkscape via the same package manager (and forget about the custom cli launcher)?) ]