RFR: JDK-8326496: [test] checkHsErrFileContent support printing hserr in error case [v3]

[Matthias Baesken]

> checkHsErrFileContent checks hs error files for existance and non-existance of some user provided patterns. However it should also have an option to print the hs_err file in case of a failing check, this would make error analysis easier.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  adjust doc of verbose param

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Changes:
  - all: https://git.openjdk.org/jdk/pull/17978/files
  - new: https://git.openjdk.org/jdk/pull/17978/files/4af66ce5..2f07be38

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17978&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17978&range=01-02

  Stats: 8 lines in 1 file changed: 0 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/17978.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17978/head:pull/17978

PR: https://git.openjdk.org/jdk/pull/17978