Configure method can be called at later times during server startup. Arguments are cached. No more protocol specific information in central perldoc. More information on new protocol layout. Server can bind to all three types.
Properties are determined according to type.
Server can HUP on all three types. Improves test reliability on systems where reuse on a socket is not reliable itself. Fixed bug in SIG HUP'ing PreFork mode. Now effectively restarts. More unification of code.