RFR: 8373710: Improve jpackage error reporting [v5]

[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 incrementally with one additional commit since the last revision:

  Fix merge

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28833/files
  - new: https://git.openjdk.org/jdk/pull/28833/files/c6766243..8eddff4b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28833&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28833&range=03-04

  Stats: 8 lines in 1 file changed: 0 ins; 3 del; 5 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