Changes to ghc(2)

Changes to ghc:
commit 939fe6c827a691c8a7b3419aec27d30328c56a70
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Tue Feb 25 16:42:09 2014 +0100

    Add release note for unicode quotation marks (re #2507)

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

commit ebb9bd36b80040dc60bc9d1f444dde6ecac6bcb9
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Sun Feb 23 22:00:57 2014 +0100

    Use U+2018 instead of U+201B quote mark in compiler messages

    This matches GCC's choice of Unicode quotation marks (i.e. U+2018 and U+2019)
    and therefore looks more familiar on the console. This addresses #2507.

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
    (cherry picked from commit 018676c7f883886b388652c913c99a10d2591b0b)