Added options -A[filename] and -S[filename] to allow more control over which output streams go where (for mlong and his troubles with running ircd via systemd).

-A controls "all messages" either sending all to stdout or the specified filename. This override the automatic suppression of the console output stream when run without a controlling TTY.

-S controls "status message" (includes non-error level log messages), either sending the status messages to stdout or the specified filename. This also overrides the automatic suppression of the console output stream when run without a controlling TTY.