RFR: 8259662: Don't wrap SocketExceptions into SSLExceptions in SSLSocketImpl [v8]

[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

Clive Verghese has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:

 - Address review comments
 - Update copyright year
 - Add error handling guidelines
 - Fix bugids and use server port passed as a parameter
 - 8259662: Don't wrap SocketExceptions into SSLExceptions in SSLSocketImpl

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Changes: https://git.openjdk.java.net/jdk/pull/2057/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2057&range=07
  Stats: 200 lines in 7 files changed: 178 ins; 0 del; 22 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