Changes to ghc(6)

Changes to ghc:
commit d562382126d9e7f9d2c5a1179ef045b0a7cae853
Author: Austin Seipp <austin@well-typed.com>
Date:   Wed Jan 22 17:38:15 2014 -0600

    Wibble.

    Signed-off-by: Austin Seipp <austin@well-typed.com>

commit c5088e299a66109346057afc151c33e47b850b92
Author: Austin Seipp <austin@well-typed.com>
Date:   Wed Jan 22 17:30:54 2014 -0600

    Fix more 32 bit performance fallout.

    Some of these are actually worse than I thought upon inspection, but
    after a little digging I haven't found exactly what has caused them.
    Some were certainly bitrotted, but others seem updated more recently, so
    something has slipped.

    I'll be filing a ticket about these.

    Signed-off-by: Austin Seipp <austin@well-typed.com>

commit 21c2607be35fe89143972fd2c2fa1479d3a3538a
Author: Austin Seipp <austin@well-typed.com>
Date:   Wed Jan 22 17:12:26 2014 -0600

    More tweaks.

    Signed-off-by: Austin Seipp <austin@well-typed.com>

commit 4f9df5a4cf060b357cfb1bc100ef32f50e4783fb
Author: Austin Seipp <austin@well-typed.com>
Date:   Wed Jan 22 17:04:41 2014 -0600

    More release note touchups.

    Signed-off-by: Austin Seipp <austin@well-typed.com>

commit b61958d79665722ab058b7daf9fade7853e100e3
Author: Austin Seipp <austin@well-typed.com>
Date:   Wed Jan 22 16:24:32 2014 -0600

    Also mention Pattern Synonyms (but with a FIXME)

    Signed-off-by: Austin Seipp <austin@well-typed.com>

commit c9ed9aa069ffb28b869bc7e409ebe98494e87f06
Author: Austin Seipp <austin@well-typed.com>
Date:   Wed Jan 22 16:21:07 2014 -0600

    Clean up the release notes.

    In particular, spell out the current dynamic situation, clean up the
    FIXMEs and xrefs, and don't forget to mention InterruptibleFFI.

    Signed-off-by: Austin Seipp <austin@well-typed.com>