Initial port to GStreamer 1.0
Remove build-time --enable-gapless-playback option

This was previously added to check for a new enough playbin, but since we're now
using Gstreamer 1.0, the playbin version should be new enough, and we can drop
the conditionals.

Signed-off-by: Chow Loong Jin <hyperair@debian.org>
Don't use the new-decoded-pad signal of decodebin

It is not available anymore in 1.0 and pad-added should be used.
Use new-style GStreamer 1.0 raw audio caps in the WAV audio profile
Merge git://people.freedesktop.org/~slomo/banshee into master

Conflicts:
	configure.ac
build: Bump GStreamer required version to 1.0.0

Just because it looks better than 0.11.99...