fix xdebug path following upstream which is build by pecl now
Merge commit '4a7fde87a35da46324d1f7024714b2c8fdbc1e23' into experimental/php

* commit '4a7fde87a35da46324d1f7024714b2c8fdbc1e23': (99 commits)
  sparse: 0.4.4 -> 0.5.0
  vimPlugins.YouCompleteMe: updated to latest
  tmux 1.9a
  Fix tarball job
  kalibrate-rtl: new package
  nixos/lighttpd: improve sub-service option types (cgit, gitweb)
  nixos/lighttpd-service: don't use types.string (it's deprecated)
  picocom: Add dependency on lrzsz so that we can transfer files
  lrzsz: Add derivation
  jack1: update to version 0.124.1
  jack: change package and attr names to 'jack1' and 'jack2'
  gcc49: maintenance update
  firefox: Build without xulrunner
  firefox: Update to 31.0
  nss: Update to 3.16.3
  nixos/doc/manual: Fix typos in README.
  Remove unused function
  firefox-3.6: Remove
  Add missing 's' in remaining meta.maintainer(s) attrs
  Add evemu tool to emulate and record input device event data
  ...