Changes to ghc(5)

Changes to ghc:
commit d591b19beb55698f429a2c8074e432e4fcde3379
Author: Gabor Greif <ggreif@gmail.com>
Date:   Sat Jul 12 17:12:10 2014 +0200

    Rectify some panic messages

commit c70a720104cb91799b4a938e598ec8ed92a265e1
Author: Gabor Greif <ggreif@gmail.com>
Date:   Sat Jul 12 11:36:02 2014 +0200

    Typoes in comments

commit b7b3f017d3224e0ba960e9ba89cd885d9843fdef
Author: Gabor Greif <ggreif@gmail.com>
Date:   Sat Jul 12 11:21:47 2014 +0200

    Fix comment

commit b8b8d190525b073aa44f7a5bda555e25ea7ef5d6
Author: Gabor Greif <ggreif@gmail.com>
Date:   Sat Jul 12 11:20:31 2014 +0200

    Activate tab checks

commit 6a75bcd0725c3e569b5e9b9d3f254a3c4745989c
Author: Gabor Greif <ggreif@gmail.com>
Date:   Sat Jul 12 11:19:58 2014 +0200

    M-x untabify