Add hash callback for connection processor
Add compare callback for connector
Move starting a connection to new method
Merge pull request #649 from matthiasbeyer/add-connection_processor_callbacks

Add missing callbacks for connector
Move closing a connection to new method
Rename flag to reflect change in semantics
Merge pull request #651 from neithernut/add-connection-connection_disconnection_methods

Add connection connection disconnection methods
Add ped_ofile handling
Merge pull request #653 from matthiasbeyer/add-child_exit_watcher

Add child exit handling