RFR: 8264148: Update spec for exceptions retrofitted for exception chaining

[Joe Darcy]

8264148: Update spec for exceptions retrofitted for exception chaining

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Commit messages:
 - Respond to review feedback.
 - Respond to review feedback.
 - Merge branch 'master' into 8264148
 - Merge branch 'master' into 8264148
 - 8264148: Update spec for exceptions retrofitted for exception chaining

Changes: https://git.openjdk.java.net/jdk/pull/3182/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3182&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264148
  Stats: 84 lines in 22 files changed: 8 ins; 44 del; 32 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3182.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3182/head:pull/3182

PR: https://git.openjdk.java.net/jdk/pull/3182