[empathy] (23 commits) ...Merge branch 'change-audio'

[Jonny Lamb <jonnylamb src gnome org>]

Summary of changes:

  6146181... audio-src: use pulsesrc instead of gconfaudiosrc
  8a937c9... audio-src: allow changing the audio source element
  65e9dec... audio-src: remove the element-added stuff
  2b922c7... configure: depend on libpulse
  7212c6e... audio-src: add API to query available microphones
  77712e7... audio-src: add the source name to the microphone info struc
  2223a2e... audio-src: add API for changing microphone
  1de1a89... audio-src: add API for getting the mic source ID
  01b0be5... audio-src: add some comments explaining the PA changes
  204fa9e... src: give empathy-call sources to the marshal generator
  d9c6036... audio-src: listen to PA state changes and signal accordingl
  dbddd44... audio-src: set property IDs properly
  7a58752... audio-src: add comment about values for unknown values
  0bc0f8f... audio-src: don't ignore monitors
  58df02d... call-window: add getters for the UI manager and audio src
  a36214f... call-window: add a Microphone menu to change mic on the fly
  90eaac4... audio-src: add is_monitor boolean to mic struct
  302af77... mic-menu: display monitors when they're the current mic
  a19f105... audio-src: only call operations_run when PA is ready
  89afdf6... audio-src,mic-menu: use DEBUG macros
  cf7f9a1... audio-src: update to newer GstPulseSrc API
  e17e618... audio-src: check for new enough pulsesrc before trying to c
  7876deb... Merge branch 'change-audio'