RFR: 8285396: Do not fill in the stacktrace of an internal exception

[Pavel Rappo]

Sometimes an exception is retrofitted into control flow to interrupt it in a way that it wasn't originally designed to be interrupted. Such an exception is an implementation detail. Once the exception is caught internally, it is discarded.

An exception has a stacktrace. Filling in a stacktrace is not free. Filling in a stacktrace that won't be used seems like a waste.

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Commit messages:
 - Update copyright years
 - Initial commit

Changes: https://git.openjdk.java.net/jdk/pull/8347/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8347&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8285396
  Stats: 15 lines in 6 files changed: 4 ins; 0 del; 11 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8347.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8347/head:pull/8347

PR: https://git.openjdk.java.net/jdk/pull/8347