Non blocking polling information.
This implementation in pure Java NIO is almost a mimic of the APR implementation. It blocks on read and write, but has non blocking polling capabilities. Currently the read/write blocking is "busy" blocking, but I will see if I can simply configure blocking for the socket and if that would still allow the poller to work as expected.
This makes it a suitable connector for comet style protocols and where APR is not desired or available.
git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@416187
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