buildNodePackage: add shell hook for development
Adds merlin

Merlin is an editor-independant tool to ease the developpement of
programs in OCaml. It aims to provide features available in modern IDEs.

Homepage: http://the-lambda-church.github.io/merlin/
Bump Logstash to 1.4.2
gbdfed: add package 1.6
nixos/znc-service: don't use types.string (it's deprecated)

Apart from s/types.string/types.str/ (or types.lines where appropriate):

* port is changed from string to int.

* extraFlags is changed from types.string (with unfortunate merge
  semantics) into a list of strings. A list of strings merge better:
  one space is added between elements.
ncmpc: updated to version 0.23.
Install all dirs for logstash

Also only patch shebangs in bin/ directory
Package for Open Sans fonts.
Consistently use the package name opensans-ttf everywhere.
Merge remote-tracking branch 'upstream/master'
Add virtualenvwrapper and its dependencies
Add SpiderOak secure backup service.
fix icu4c build on darwin
added snes9x-gtk with pulseaudio support
License, platforms and maintainer for Logstash
added gpodder package
haskellPackages.engineIO: Update to 1.0.2
haskellPackages.engineIO/engineIOSnap/socketIO: Update to latest versions
Add plugins haskell package
Merge remote-tracking branch 'upstream/master'