rtorrent: compile with xmlrpc-c for 3rd party UIs
Remove unnecessary dependencies and centralize version string.
haskell-cabal-bounds: update to 0.8.1
haskell-constraints: update to 0.4
haskell-conduit-extra: update to 1.1.3.1
haskell-bytes: update to 0.14.1
haskell-json-assertions: regenerate with cabal2nix
haskell-Strafunski-StategyLib: update to 5.0.0.4
haskell-distributed-process: update to 0.5.1
Merge pull request #3601 from Fuuzetsu/updates

Few Haskell updates
Merge pull request #3597 from Fuuzetsu/rtorrent-xmlrpc

rtorrent: compile with xmlrpc-c for 3rd party UIs
weechat: Bump to 1.0.

A happy day for all weechat-users!
haskell-protocol-buffers: only mark as broken for GHC 7.8.3
Merge pull request #3606 from ederoyd46/haskell-protocol-buffers

haskell-protocol-buffers: only mark as broken for GHC 7.8.3
add pythonPackages.detox
update cran packages
manually fix dplyr and png cran-packages
r-RcppArmadillo: update to version 0.4.300.0
cran-packages.nix: added missing sha256 fields
cran-packages.nix: drop trailing whitespace