wget darwin: disable Test-iri-disabled.px

This test fails on MacOS X. The failure has something to do with
the tests expecting filesystems to accept/store filenames as
bytes. On the HFS+ filesystem, however, filenames are Unicode
characters (Normalisation Form D).

This wget ticket appears to be relevant
    http://savannah.gnu.org/bugs/index.php?27541

The maintainer does not seem to think that this test
failure represents a problem in practice:
    http://article.gmane.org/gmane.comp.web.wget.general/8988

But this patch should be revisited/removed if this aspect of wget is
ever addressed in the future.

NB: I'm also a bit concerned/confused that none of the tests mentioned
in that message seem to fail, so I'm not 100% sure if this is the
relevant issue.
sdlmame: update to latest version
mpd: update to latest version
awesome: add which to build inputs (for awesome-client)
haskellPackages.webRoutesBoomerang: new expression
LuaJIT: New package

Just-in-time compiler for lua 5.1 with strong focus on performance.
Uses the same API as lua 5.1 which makes it extremely easy to integrate.
Minifix: didn't use the name variable in the package.
Merge pull request #1219 from Zoomulator/add_luajit

LuaJIT: New package
python-robotframework: new package

Robot Framework is a generic test automation framework for acceptance
testing and acceptance test-driven development (ATDD).

http://robotframework.org/
robotframework-ride: new package

Robot Framework RIDE is a light-weight and intuitive editor for Robot
Framework test case files. (It's more like an IDE.)
HOL: update to k.8
Fix HOL documentation build
haskell-system-posix-redirect: update to version 1.1.0.1
haskell-shake: update to version 0.10.9
clang: Build with gcc 4.7 for better libstdc++.
all-packages: Add a self-hosted variant of clang.
clang: Do not try to build clang-tblgen in LLVM's build path.
libcxx: Update to 190100 and build with libc++abi.
clang-wrapper: Guard against LD_LIBRARY_PATH.
clang-wrapper: Optionally use libc++ instead of libstdc++.