as a default, if the host argument does not specify a port.

Elminate most separate calls to VSS_parse()

Make it possible to specify address and port of backends in VCL using
only the .host field.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@5117 d4fa192b-c00b-0410-8231-f00ffab90ce4