Derive the default of reahlsystem.connection_uri from project_name of the given reahlsystem.root_egg.
Derive the default of reahlsystem.connection_uri from project_name of the given reahlsystem.root_egg.

reahl/reahl,reahl/reahl,craig-reahl/reahl,reahl/reahl,craig-reahl/reahl,craig-reahl/reahl