[jdk11u-dev] RFR: 8318971: Better Error Handling for Jar Tool When Processing Non-existent Files [v2]

[Goetz Lindenmaier]

> I backport this for parity with 11.0.23-oracle.

Goetz Lindenmaier has updated the pull request incrementally with one additional commit since the last revision:

  Fix """ Strings

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Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/2484/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/2484/files/1b1242fd..22db42ad

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2484&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2484&range=00-01

  Stats: 10 lines in 1 file changed: 0 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2484.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2484/head:pull/2484

PR: https://git.openjdk.org/jdk11u-dev/pull/2484