[gupnp-av] (10 commits) Non-fast-forward update to branch wip/didl-s

[Jens Georg <jensgeorg src gnome org>]

The branch 'wip/didl-s' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 http://live.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  fbc8a2f... Add child item on container in DIDLWriter
  94b1a05... Really silence XSD warnings
  18cc154... Add dlna:lifetime property to items
  72dee58... Add tag-only filter function to writer
  736649a... wip: Add media collection class
  fc464ad... wip: Some fixes
  6e9cc10... wip: Fix docs

Commits added to the branch:

  92e9a2c... Add child item on container in DIDLWriter
  d292899... Really silence XSD warnings
  cbcdfb9... Add dlna:lifetime property to items
  ae1252f... Add tag-only filter function to writer
  bd5b495... Add media collection class
  720c965... Fix typo in comment
  1848876... Fix introspection annotation
  5e13438... Fix node filtering in DIDLLiteWriter
  ef20f4c... Parse DIDL_S playlists
  3a1d4c9... Doc fixup