+ - Don't create version information string each time a client connects
+ but insetead on server startup. By Florian Westphal.
+ - New configuration variable "PidFile", section "[Global]": if defined,
+ the server writes its process ID (PID) to this file. Default: off.
+ Idea of Florian Westphal, <westphal@foo.fh-furtwangen.de>.