git-annex: drop obsolete dependency on testpack
haskell-testpack: drop obsolete and unmaintained library
haskell-split: update to version 0.2.2
haskell-github-backup: update to version 1.20130414
haskell-happstack-server: update to version 7.1.7.1
haskell-statistics: update to version 0.10.3.0
haskell-cuda: update to version 0.5.0.2