[jdk7u] RFR: 8285727: [11u, 17u] Unify fix for JDK-8284920 with version from head

[Yuri Nesterenko]

I'd like to backport this leveling fix to 7u, too. All differences between patches for adapted for git 7u and e.g. 15u are in paths. First round of tests run OK.

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

Commit messages:
 - 8285727: [11u, 17u] Unify fix for JDK-8284920 with version from head

Changes: https://git.openjdk.java.net/jdk7u/pull/4/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk7u&pr=4&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8285727
  Stats: 132 lines in 4 files changed: 122 ins; 0 del; 10 mod
  Patch: https://git.openjdk.java.net/jdk7u/pull/4.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk7u pull/4/head:pull/4

PR: https://git.openjdk.java.net/jdk7u/pull/4