sock: unify the format of debug messages for the entire transport.
sock: fix a problem when returning CCI_EVENT_CONNECT events.
sock: code cleanup.
Update the debug macro to include the pid of the process (make debugging easier)
+ introduce a new debug_ep() function that is similar to debug() but adds a cci__ep_t* so debugging when dealing with multiple endpoints is easier.
sock: switch a few debug() call to debug_ep()
+ code cleanup.
sock: Correctly deal with the conn_ack in the context of a reject
+ correctly calculate the payload and make sure its size is not too big before sending a message.
Add a unit test to verify the content of messages when sending "active messages".
sock: fix a major buffer management problem
+ add some debug statements.