mpack: add version 1.6
samba: 3.6.8 -> 3.6.18

Release notes (left column): http://www.samba.org/samba/history/

The GNU/Hurd patch doesn't apply anymore so I dropped it.
haskell-git-annex: update to version 4.20130815
haskell-entropy: update to version 0.2.2.2
haskell-hxt-charproperties: update to version 9.1.1.1
haskell-hxt-unicode: update to version 9.0.2.1
haskell-liblastfm: update to version 0.3.0.0
haskell-monadcryptorandom: update to version 0.5.3
haskell-multiarg: update to version 0.18.0.0
haskell-uniplate: update to version 1.6.11
haskell-cpphs: update to version 1.17
hlint: jailbreak to support latest version of cpphs