libcanberra: upgrade and refresh packaging

Update to 0.29 (latest, 0.30, needs GStreamer 1.0) and refresh the package based
on the different recipes in oe-core and meta-oe.

Explicitly depend on GTK+ 2 and GTK+ 3, but split those dependencies into
different packages.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>