plugin pipe/stream, file transfert: refactoring and improvments: this is a big patch as things had to be changed at the same time. - changed methods using profile argument to use client instead - move SatFile in a new tools.stream module, has it should be part of core, not a plugin - new IStreamProducer interface, to handler starting a pull producer - new FileStreamObject which create a stream producer/consumer from a SatFile - plugin pipe is no more using unix named pipe, as it complicate the thing, special care need to be taken to not block, and it's generally not necessary. Instead a socket is now used, so the plugin has been renomed to jingle stream. - bad connection/error should be better handler in jingle stream plugin, and code should not block anymore - jp pipe commands have been updated accordingly fix bug 237