launcher checks built-in server port even if 'run built-in server' is not checked

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What steps will reproduce the problem?
1.Run an (non-built-in) webserver on port 8888
2 Uncheck launcher option Server -> "Run built-in server"
3.Run or debug the launch configuration

What is the expected output? What do you see instead?

It should run without any warning - since I intentionally set up an alternative 
server.  

Instead, it complains of another server using that port.

In my ideal world, it would complain if the launch URL *does not* have a server 
running on it - as that indicates a valid problem if "Run built-in server" is 
not checked.

What version of the product are you using? On what operating system?

3.2.1 and 3.2.2 of GPE.  This appears to be a regression.  

Using Ubuntu 12.10 (mint 14), Eclipse 3.7.

Please provide any additional information below.

Changing the port number makes the warning go away.  Indicates that the bug is 
simply it doing the check even though "Run built-in server" is not selcted.

Original issue reported on code.google.com by carch...@gmail.com on 27 Mar 2013 at 8:48

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Original comment by rdayal@google.com on 28 Mar 2013 at 5:43

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Original comment by rdayal@google.com on 15 Apr 2013 at 3:33