Bugfix/controlbar events [Finishes #78737770]

There is a reference to this String elsewhere in the code. Please fix.

On Mon, Sep 15, 2014 at 7:32 PM, Rob Walch <notifications@github.com> wrote:

> In src/flash/com/longtailvideo/jwplayer/events/MediaEvent.as:
>
> > @@ -17,6 +17,8 @@ package com.longtailvideo.jwplayer.events {
> >  		public static const JWPLAYER_MEDIA_BUFFER:String = "jwplayerMediaBuffer";
> >  		public static const JWPLAYER_MEDIA_BUFFER_FULL:String = "jwplayerMediaBufferFull";
> >
> > +        public static const JWPLAYER_AUDIO_TRACKS_CHANGED:String = "jwplayerAudioTracksChanged";
>
> This should not be part of this pull request or been staged for commit.
>
> A few days ago I renamed this event "track change" (it fires when the
> current track changed, not when the list of tracks is updated.)
>
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> <https://github.com/jwplayer/jwplayer/pull/154/files#r17575733>.
>