Update Node.js to 0.10.28
Merge pull request #2588 from c9/node-0-10-28

Update Node.js to 0.10.28
haskell-unix-memory: new expression
haskell-system-time-monotonic: new expression
haskell-generate: new expression
haskell-hcltest: new expression
haskell-quickcheck-property-monad: new expression
haskell-th-lift-instances: new expression
haskell-dynamic-cabal: new expression
Merge pull request #2592 from bennofs/haskell-new-expressions

Add a few haskell expressions
haskell-Strafunski-StrategyLib: jailbreak to fix build with GHC 7.8.2
conkeror: upgrade to latest snapshot
sysdig: update to 0.1.82
luajit: support Darwin builds
sysdig: support builds without the kernel module, add pkgs.sysdig attr