Adding connection teardown event.
Upoon close/disconnect application get connection closed /disconnected
notification after message flush complete the application shall get
"connection teardown" event. this is the last connection oriented event.

Signed-off-by: Eyal Salomon <esalomon@mellanox.com>
Removing page alignment requirement from buffers.

Signed-off-by: Eyal Salomon <esalomon@mellanox.com>
return error upon releasing response on the responder side

Signed-off-by: Eyal Salomon <esalomon@mellanox.com>