Description of Problem: The "Add Include" option from the context menu of the C editor is done via a contribution by another plugin that knows enough the platform to return an array of includes. It will work now if there is a contributor, but there is none for GNU/Linux. Since the option doesn't work on GNU linux, maybe it should be taken out. Unless we have a fix for this.
There is no lonmger an "Add Includes" option from the context menu of the C editor.