Log Message:
Pullup ticket #4991 - requested by joerg
lang/ghc7: build fix

Revisions pulled up:
- lang/ghc7/Makefile                                            1.25
- lang/ghc7/distinfo                                            1.14
- lang/ghc7/patches/patch-libffi_ghc.mk                         1.1
- lang/ghc7/patches/patch-rts_ghc.mk                            1.6

---
   Module Name:	pkgsrc
   Committed By:	joerg
   Date:		Sat May  7 10:02:06 UTC 2016

   Modified Files:
   	pkgsrc/lang/ghc7: Makefile distinfo
   	pkgsrc/lang/ghc7/patches: patch-rts_ghc.mk
   Added Files:
   	pkgsrc/lang/ghc7/patches: patch-libffi_ghc.mk

   Log Message:
   Fix libffi linkage, so that it actually picks up the right version and
   includes the rpath. Seen by a not so happy devel/happy. Bump revision.