Changes to ghc(3) filepath(3)

Changes to ghc:
commit 41212fd652b59d949a993225e90cb202f2a33087
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Fri Oct 18 14:35:07 2013 +0100

    Clarify comments and liberalise stack-check optimisation slightly

    The only substantive change here is to change "==" into ">=" in
    the Note [Always false stack check] code.  This is semantically
    correct, but won't have any practical impact.

commit d43bf5d8f8474724faba818627e7e3b920bcdb2e
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Fri Oct 18 13:51:56 2013 +0100

    Comments about control-flow optimisation

commit 4fa1efe3f1feab103f11fbddc08bccf924ef4ef1
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Fri Oct 18 13:04:33 2013 +0100

    Comments (about the stack overflow check) only

Changes to filepath:
commit 41fdcaa4bb53eca019a50dd99296ddaee2c2bdf8
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Fri Oct 18 15:35:16 2013 +0200

    Fix-up .travis.yml

    Re-add the invocation of `cabal configure` that went mising in 03a6a15e

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

commit 03a6a15eb49fc77163361c735a29997f884f49bc
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Fri Oct 18 15:28:16 2013 +0200

    Attempt to integrate test-suite w/ Cabal and Travis-CI

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

commit 9698ccf97a6e0be14412c898431c9c5c060b7d14
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Fri Oct 18 14:50:03 2013 +0200

    Markdownify `README.md` and remove obsolete `.bat`s

    The old dead links in readme.txt have been updated/removed, and some
    typos fixed. README.md has been added to source tarball via
    `extra-source-files`.

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