Convert System.Runtime.InteropServices.RuntimeInformation to a fat package

[ericstj]

This enables us to package it such that it works on desktop without a lineup. Desktop shouldn't need a lineup and this is one package that was causing it to be required. Let's double check all packages as part of this work to ensure they don't need a lineup for desktop.

[ericstj]

Another thing I'm noticing while looking at this is some packages have a specific desktop asset and RID specific assets but don't always put the desktop asset in the RID folder. As a result we could get different implementation (wrong) when resolving for desktop and providing a rid like "win7" or "win8". I think we should try and make all the desktop assets behave the same.

If the package is fat, duplicate the desktop asset in the RID and RID-less folder.

[davidfowl]

/cc @emgarten

This is interesting because it means you can end up with different nuget selection on packages.config and project.json (but you could argue that's expected)

[ericstj]

Yeah, that's expected. I'm making changes to our packages to ensure that any packages that do support project-types that are still on packages.config get the same asset (by copying that asset into lib, so long as it doesn't require RID specific selection on those projects)

[pranavkm]

@ericstj - is this not going to be fixed for RTM?

[ericstj]

It's already fixed in the RC3 packages.

[pranavkm]

Ok. I was confused by the 1.1.0 milestone attached to this work item.

[ericstj]

That's odd, it was set to 1.0.0-rtm on 28 days ago, and I don't see anything that changed it to 1.1.0. I have changed it back.