Status of Jaguar support?

[Ryan Schmidt]

Is MacPorts officially no longer supporting Jaguar? What happens if  
you try to install MacPorts on Jaguar? What happens if you manage to  
install MacPorts on Jaguar -- can you run it?

I see changes were committed to the documentation indicating only  
10.3 and later are supported.

I see several ports including darwin 6 platform selectors that just  
output a message that the port doesn't work on that platform.

If we are officially no longer supporting Jaguar, then MacPorts  
should decline to install on that OS, port should decline to run on  
that OS, and we should remove all darwin 6 platform selectors from  
all ports.