RFR : 8139965:Hang seen when using com.sun.jndi.ldap.search.replyQueueSize

[Seán Coffey]

Hoping to get a review on this issue that's been sitting on my plate for 
a long while. Pavel drew up the bulk of the edits for this one (Thanks)

The fix basically delegates polling and timeout management to the 
BlockingQueue.poll(timeout.. ) method. As a result it makes Connection 
readReply logic much easier to handle.

webrev : http://cr.openjdk.java.net/~coffeys/webrev.8139965.9/webrev/
bug report : https://bugs.openjdk.java.net/browse/JDK-8139965

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Regards,
Sean.