[jdk11u-dev] RFR: 8265980: Fix systemDictionary and loaderConstraints printing

[Kimura Yukihiro]

I would like to backport
JDK-8265980 Fix systemDictionary and loaderConstraints printing
Because the systemDictionary infomation is important for develoers or users to maintain JVM.
I would appriciate if someone could review it.

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Commit messages:
 - Backport e4be9680cb5b0aab9a422d461807a619987d6df8

Changes: https://git.openjdk.org/jdk11u-dev/pull/1938/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1938&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8265980
  Stats: 15 lines in 3 files changed: 3 ins; 9 del; 3 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1938.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/1938/head:pull/1938

PR: https://git.openjdk.org/jdk11u-dev/pull/1938