#37 TuningProfile

[Dong Xin]

We were trying to implement saslsrp in beepcore. The
problem
we found in the current implementation are:

1. The SEQ message are always sent out before the message
is processed in non-tuning mode, since we want to
switch the
ordinary socket to an SRPsocket, the SEQ message introduces
difficulties to synchronize a point where both peers
can safely
switch the underlying socket.

2. If we use the tuning mode, both server and client
side will
communicate via raw socket layer. Since we have to follow
the SASLProfile to implement SASLSRP, this TLS like
approach
is not desirable.

We made two patch files for ChannelImpl and Channel to fix
the above problems. More specifically, we add more
state variables
which help us still use the beepcore framework while in
tuning.