first step: let the tracee connect before the remote tracer
and let's have a "no wait" mode where the local tracer starts
the tracee before the remote tracer is connected
as special events.
If we store all received events to a file, this dump is now
self-contained. Helps to analyze traces.
Some functions have also been factorized in the process, too much
duplication.
(Also tracer/Makefile was forgotten in previous commit, included
in this one...)
Cedric Roux