Added support for Solaris 8.

bin/compile-nagios-plugins

bin/utils/functions.sh

rules/gentoo/nrpe-host-auto.sh

rules/solaris10/config-nrpe.sh

rules/solaris10/nrpe-host-auto.sh

rules/solaris8/config-nrpe.sh

rules/solaris8/nrpe-host-auto.sh

rules/solaris8/nrpe-os.cfg.in

rules/solaris8/setup-env.sh

site-rules/lysator/solaris8/install-nrpe-posthook.sh

site-rules/lysator/solaris8/nagios-plugins-config-opts

site-rules/lysator/solaris8/os