Please review the patch for the JDK-8274524

SSLSocket.close() could cause an intermittent hang of the socket read 
operation. It happens in case of SO_TIMEOUT is set to 0 (infinite timeout).
SSLSocket.close() reads from the socket as part of the skip() operation to 
prevent TCP Connection reset (see JDK-8268965). Socket reads are performed in a 
loop for small chunks. These read operations could cause a deadlock, in case of 
SO_TIMEOUT = 0
I suggest to force non-zero SO_TIMEOUT during the skip() operation to prevent 
such deadlock

This is a second iteration of review. Previous PR was closed without 
integration: https://github.com/openjdk/jdk/pull/5760

-------------

Commit messages:
 - Add read timeout for deplete
 - Fix jcheck issues
 - Add ClientSocketCloseHang jtreg test
 - Reimplemented readLock, added lock in readHandshakeRecord
 - 8274524: SSLSocket.close() hangs if it is called during the ssl handshake

Changes: https://git.openjdk.java.net/jdk/pull/7432/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7432&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274524
  Stats: 146 lines in 2 files changed: 146 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7432.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7432/head:pull/7432

PR: https://git.openjdk.java.net/jdk/pull/7432

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