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)
Fixes go 1.1.2 compilation on OSX Maverick

Apparently Apple thinks that faking gcc wiht a clang stub but not providing a
compatile libgcc.a is not going to cause any issues. They really do hate GPL.
yandex-disk: add the Yandex.Disk cloud storage client

Details:
http://help.yandex.com/disk/cli-clients.xml
prey: specify sha256 for fetchgit
mkDerivation: Set meta.position to the source file of the derivation

This requires Nix 1.7.
Partial revert of b09f8110dbcb8bc8a1fcdb3e9a5dddb0956aba96

Didn't mean to commit this change

Signed-off-by: Shea Levy <shea@shealevy.com>
xfce4-xkb-plugin: Add package

Allows you to setup and use multiple keyboard layouts.
xfce4-datetime-plugin: Add package

Shows the date and time in the panel, and a calendar appears when you left-click on it.
xfce4-session: Don't set $PATH in xflock4 script

This makes Xfce4's "Lock Screen" action button actually work when xscreensaver
is installed and the daemon is running.
Don't include the code name in the EBS AMI name
Update s3http
hibernate: upgrade from 1.98.1 to 2.0
npm2nix/patchSrc minor fix

Signed-off-by: Shea Levy <shea@shealevy.com>
awesome-3-5: add expression and nixos module
openbox: Update to 3.5.2
haskellPackages.digits: New expression
Merge pull request #1212 from lovek323/awesome

Awesome: fix issue with awesome-client, add expression for 3.5