[jdk11u-dev] RFR: 8210959: JShell fails and exits when statement throws an exception whose message contains a '%'.

[Aleksey Shipilev]

This is unclean backport: there is a minor conflict in `@bug` line in the test. Otherwise it applies cleanly. New test case fails without the patch, passes with it.

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Commit messages:
 - 8210959: JShell fails and exits when statement throws an exception whose message contains a '%'

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/64/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=64&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8210959
  Stats: 18 lines in 2 files changed: 15 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/64.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/64/head:pull/64

PR: https://git.openjdk.java.net/jdk11u-dev/pull/64