ibrdtn: Add BundleID instance to StatusReportBlock

The BundleID replaces the separate variables for source,
timestamp, sequence number and fragmentation offset.
daemon: Add logging TAG to TCPConnection.
daemon: Add logging TAG for TCPConvergenceLayer
tools: Deprecated code removed.
tools: dtnstream improved with flow control

This patch adds automatic flow control to the streaming source
using the StatusReport features. On each received status report
the existing buffer is released.

In addition, the buffer handling has been improved so that the
"-c" parameter defines the minimum bundle size (buffer size)
and "-C" the maximum bundle size. The maximum buffer size if
even valid, if flow control is activated.
daemon: Replace "/" with the generic EID delimiter