Possible incomplete writes with SSL NIO2. Incorrect reads with SSL NIO2 caused by a bad strategy

Possible incomplete writes with SSL NIO2. Incorrect reads with SSL NIO2 caused by a bad strategy or handling IO differences between NIO and NIO2 that don't seem to be justified. After some errors, the pending flags could remain set when using SSL NIO2

http://svn.apache.org/r1672626