RFR: 8259662: SocketException should be passed through

[Clive Verghese]

Redo for 8237578: JDK-8214339 (SSLSocketImpl wraps SocketException) appears to not be fully fixed

This also fixes JDK-8259516: Alerts sent by peer may not be received correctly during TLS handshake

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Commit messages:
 - 8259662: SocketException should be passed through

Changes: https://git.openjdk.java.net/jdk/pull/2057/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2057&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8259662
  Stats: 488 lines in 7 files changed: 479 ins; 0 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2057.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2057/head:pull/2057

PR: https://git.openjdk.java.net/jdk/pull/2057