Typeable: Always use UTF-8 string unpacking primitive
Typeable: Always use UTF-8 string unpacking primitive

Reviewers: austin, hvr

Subscribers: Phyx, rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D3734

shlevy/ghc,shlevy/ghc,sdiehl/ghc,shlevy/ghc,ezyang/ghc,shlevy/ghc,sdiehl/ghc,ezyang/ghc,ezyang/ghc,ezyang/ghc,ezyang/ghc,ezyang/ghc,sdiehl/ghc,shlevy/ghc,ezyang/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,shlevy/ghc,shlevy/ghc,sdiehl/ghc