Java object to represent each OpenAL object (listener, sources,
and buffers) and delete the OpenAL object if the Java object is
garbage-collected. Added the full range of listener and source
settings.
git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@653 ed5b42cb-e716-0410-a449-f6a68f950b19