Ryan Scott authored Sep 17, 2015 and Thomas Miedema committed Sep 17, 2015

Currently there exists a nameBase function (for retrieving a Name's OccName)
and a nameModule function (for retrieving a Name's ModName), but there is no
counterpart for PkgNames.

This would be useful for implementing Template Haskell features which need
to have easy access to a Name's package (e.g., automatically derived Lift
instances).

Reviewed By: goldfire, austin, thomie

Differential Revision: https://phabricator.haskell.org/D1237