Changes to ghc

Changes to ghc:
commit 96a8980183ed12a354db1b92f271b98bccce9ae8
Author: Joachim Breitner <mail@joachim-breitner.de>
Date:   Sat Jun 7 13:18:55 2014 +0200

    Pretty-print built in synonym families in interfaces

    This closes #9181.