* If this doesn't melt the Http Server, this will significantly reduce the number of threads in use on regions with many users.
* Adds AddPollServiceHTTPHandler, and RemovePollServiceHTTPHandler to BaseHttpServer
* Generic enough to be used for many long poll services, not only the EventQueue.
* Made various changes to BaseHttpServer to accommodate the new interfaces.
* This version has been significantly re-architected and may fail in unusual and insidious ways.
* Please pay attention to any errors you get and post a Mantis if you can reproduce an issue with the HTTPServer. I'm including the pdb and having the http server compiled in debug for a few weeks so that when an error occurs, it'll print the pertenant data.
* Once again, this is the full C# WebServer, not the lite branch that is included in LibOMV (we need SSL!)
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