Clean compile for ReSharper 9
Changed runner back to a .net 3.5 project

Needs to be .net 3.5 to support running test assemblies targeting .net
3.5, but the ReSharper SDK won't install into .net 3.5 projects (grr).
Added ZoneMarker
Renamed assemblies
Updated nuspec for ReSharper 9

Note the new package id (grr).