[ptp-dev] install features

[Greg Watson <g.watson@xxxxxxxxxxxx>]

I've been thinking about the features issue again and have come up with a different plan. Originally I was suggesting that we have three options: PTP, RDT, or PTP+RDT (plus some minor features). However on further reflection, I think this is overly complex also, since in most cases PTP users will also be RDT users.

My second proposal is therefore that we have only two features: "PTP+RDT" and "RDT only". Although RDT has RSE dependencies, so installing PTP would implicitly install some RSE plugins, I don't think this is as much of a disadvantage as a confusing install process. Also, this is only what will be installed from the Helios/Indigo update site. Users are still able to choose to install any individual components from the PTP update site. 

Thoughts?

Greg