Handling Thread.interrupted in MediaHttpDownload

[markperona]

I was wondering if you could make a change such as the following to handle stopping a download. The developer could interrupt the background Thread doing the download to stop it.

        if (mediaContentLength <= nextByteIndex || Thread.interrupted()) {
            // All required bytes have been downloaded from the server.
            bytesDownloaded = mediaContentLength;
            updateStateAndNotifyListener(DownloadState.MEDIA_COMPLETE);
            return;
        }

[andrey-qlogic]

@markperona, @JustinBeckwith, @mattwhisenhunt this may be already fixed with #1101