Upstream & Downstream: added utility function to send C strings
Actor: changed Object to be inherited virtually
Array: added the elements() function
Buffer: added overloaded split() and region() functions
Dispatcher: added ability to interrupt while epolling
Downstream & Upstream: fixed setUpstream() & setDownstream()
HbdpServer & HbdpConnection: added closing ceremonies
Merge branch 'master' into gtesting