There has been some changes to the file transfer clases in Swiften since Tarun's patch was written. This patch updates the java classes to bring them in line with the swiften one. In details IBBSendSession - added code to clean up onResponse connection when not needed. In Swiften this was done by keeping reference to current session using boost bindings to remove binding. In java we have to keep a reference to the current onResponse connection and disconnect it when not neeeded. IncomingFileTransferManager - Remove redundant IQRouter field. LocalJingeTransportCandidateGenerator - Do not advertise link-local IPv6 addresses in FT candidates OutgoingSIFileTransfer - File deleted SOCKS5BytestreamProxiesManager and SOCKS5BytestreamProxyFinder - Search for all proxies instead of just one. Test-information: Ran make and make test to check everything built ok and that the unit tests still passed. Change-Id: I696444e5074fe20625243693a44c836306b3a41e