buffer: remove wrong comment

Refcount and writability are not related for memory objects.
ghostpad: hold a reference to the target pad while unlinking it

https://bugzilla.gnome.org/show_bug.cgi?id=725809
ghostpad: use gst_pad_get_peer to acquire a reference to the target pad

This ensures that the lock of the internal pad is held while referencing
it's peer (= the target pad), which ensures that the peer is not
going to be unlinked/destroyed in the meantime.

https://bugzilla.gnome.org/show_bug.cgi?id=725809
docs: fix multiqueue docs for new template names foo_%d -> foo_%u

https://bugzilla.gnome.org/show_bug.cgi?id=726358
launch: place the deep-notify on the right pipeline

If the toplevel bin is not not a pipeline, we place the bin in a
pipeline. Also make sure that we connect to the deep-notify of this new
pipeline because we will g_signal_handler_disconnect() from it later.
pad: Include event type in debug output when delaying a sticky event because of not-linked
gst-launch.1: Playbin2 is dead, long live playbin

Looks like that was the last remaining mention in core ...
baseparse: Fix memory leak

Queued frames were not released after being pushed, this
caused a leak of the GstBaseParseFrame structure.

https://bugzilla.gnome.org/show_bug.cgi?id=727883
structure: error out when trying to fixate a fraction near an invalid target