Give the managers main a struct cli and use that to call into
the paramter stuff for setting listen address.  More params to follow.

When setting the listen address, check that getaddrinfo() doesn't
hate it.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1000 d4fa192b-c00b-0410-8231-f00ffab90ce4