[Catalyst] Please test: Updated HTTP server that plays nicer with IE

[Andy Grundman]

After reworking much of the development HTTP server, I've removed the  
keep-alive hack (-k option) that was put in as a workaround for some  
IE bugs.  I think the IE issues may finally be solved and so this is  
no longer necessary.

If you use this option or have had IE issues, I'd appreciate if you  
could test out the latest code in trunk  and see if your app still  
works without the -k option.

If you have any problems, set CATALYST_HTTP_DEBUG=1 and post the  
results.

Thanks,
-Andy