[empathy] (15 commits) ...Merge branch 'requests'. Fixes: #598905

[Sjoerd Simons <sjoerds src gnome org>]

Summary of changes:

  6298cb3... Request channels from the CD instead of the CM
  6c34919... Check if channels we requested satisfy requests
  93aeafe... Don't ever drop requested channels
  696f7bd... Remove dead code related to outstanding channels
  09a20a4... Replace tabs with spaces
  871cd05... Output the path before trying to register it
  eb8a6e3... Add a convenience function to get the busname of a handler
  eea9915... Add a debug message for when errors are signaled
  0e9bd3f... If we're asked to handle a channel twice, assume it's due t
  c98d650... Set ourselves as the preferred handler if there is a callba
  05caf0f... Small coding style fix
  b05a5ab... Assert that the account exists
  1e878d2... Use a appropriate unique name for Empathy unique app
  0653070... Not using the weak object anymore, get the dispatcher reque
  ed582f4... Merge branch 'requests'. Fixes: #598905