[grilo-plugins] (14 commits) Created branch tracker-notification

[Lionel Landwerlin <llandwerlin src gnome org>]

The branch 'tracker-notification' was created.

Summary of new commits:

  e54c313... tracker: switch to tracker:id as Grilo key id instead of UR
  34f5e89... tracker: add notification support
  e5f27bd... tracker: avoid parsing items unrelated to grilo's data type
  d1d2cd4... tracker: make searches matches user expectations
  aad5324... tracker: avoid using the same media instance
  bdc04ba... tracker: remove useless comments
  3fb556e... tracker: make requests more robust
  63bb33a... tracker: rework item cache
  987a2b6... tracker: avoid asking metadatas on fake directories in brow
  afd98c7... tracker: avoid relaying on UPnP ontology
  c5a04b1... tracker: fix null pointer usage
  7f0af6e... tracker: implement may_resolve()
  97e8594... tracker: provide filesystem exploration through browsing
  a986ce7... tracker: support metadata request with NULL media