#9 Please add option --version

[Wilfried Brunken]

Not a bug, but
the option --version is the standard option in most
GNU Programs to tell the Version and a short info
about the program. After printing info, exit without
executing any operations. Example:

./nrpe --version
NRPE - Nagios Remote Plugin Executor
Copyright (c) 1999-2006 Ethan Galstad
(nagios@nagios.org)
Version: 2.5.1
Last Modified: 04-09-2006
License: GPL v2 with exemptions (-l for more info)
SSL/TLS Available: Anonymous DH Mode, OpenSSL 0.9.6 or
higher required
TCP Wrappers Available

<system prompt>