linux-3.12: security update .22 ->.23, CVE-2014-0206

CC #3090.
linux-3.13: remove, as it's vulnerable

CC #3090.
git: Updated to 2.0.1 (close #3096)
skype: 4.2.0.13 -> 4.3.0.37
Merge branch 'skype43' of git://github.com/nslqqq/nixpkgs

skype: 4.2.0.13 -> 4.3.0.37
haskell-extensible-effects: re-generate expression with cabal2nix
haskell-pipes-bytestring: re-generate expression with cabal2nix
haskell-bson: update to version 0.3
haskell-hcltest: update to version 0.3.2
haskell-mongoDB: update to version 2.0
haskell-quickcheck-property-monad: update to version 0.2.2
haskell-simple-sendfile: update to version 0.2.15
haskell-unix-compat: update to version 0.4.1.3
Merge pull request #3093 from lethalman/sshkeys

nixos/sshd: drop mode from auth keys file. Closes #2559
haskell-folds: new expression
samba: security-only updates 2.6.22 -> .24

Fixes CVE-2014-{0244,3493} and CVE-2013-4496
Merge remote-tracking branch 'upstream/master'
smljnBootstrap: new expression for running smlnj on darwin
twelf: new expression; prover for PL theory and logic
Merge pull request #3094 from vandenoever/povray

Update povray.