RFR: 8373710: Improve jpackage error reporting [v4]

[Alexey Semenyuk]

> - Append "Error: " prefix to error messages
> - Always print stack traces of internal exceptions, not only when running in verbose mode

Alexey Semenyuk has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:

 - Merge branch 'master' into JDK-8373710
 - Fix test failure; Fix whitespaces
 - cli/Main fix ErrorTest failure
 - Improve error reporting: fix the value of "message.error-header" l10n key that was supposed to be updated in JDK-8372359. Always print stack trace of an exception if was not explicitly thrown from jpackage code. Better test coverage for the cli/Main.

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Changes: https://git.openjdk.org/jdk/pull/28833/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28833&range=03
  Stats: 260 lines in 5 files changed: 240 ins; 1 del; 19 mod
  Patch: https://git.openjdk.org/jdk/pull/28833.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28833/head:pull/28833

PR: https://git.openjdk.org/jdk/pull/28833