[jdk11u-dev] RFR: 8221351: Crash in KlassFactory::check_shared_class_file_load_hook [v3]

[Joshua Cao]

> This fixes a crash in JDK 11.
> 
> Merge conflicts are mostly trivial. We can keep hunks from both HEAD and the backport. There is one merge conflict in licensing.

Joshua Cao has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - Merge branch 'master' of https://git.openjdk.org/jdk11u-dev into 8221621
 - Update HelloCustom copyright year
 - 8221621: Crash in KlassFactory::check_shared_class_file_load_hook
 - 8221621: FindTests.gmk cannot handle "=" in TEST.groups comments

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

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1604/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1604/files/666c4eca..cf293e30

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1604&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1604&range=01-02

  Stats: 3006 lines in 99 files changed: 2548 ins; 190 del; 268 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1604.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1604/head:pull/1604

PR: https://git.openjdk.org/jdk11u-dev/pull/1604