Configuring different Context's to use different ports

[Bai Shen]

I have several web apps running on tomcat, each with their own context.  I
also have connectors for 80 and 443.  The problem is that I'd like some of
the context's to use port 80 only, and some of them to use port 443 only.
Right now, tomcat will accept connections to all contexts on all defined
ports.