[jdk17u-dev] RFR: 8273914: Indy string concat changes order of operations

[Liam Miller-Cushon]

This is a backport of [JDK-8273914: Indy string concat changes order of operations](https://bugs.openjdk.org/browse/JDK-8273914).

The patch applied cleanly.

Testing: tier1 langtools tests

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Commit messages:
 - Merge remote-tracking branch 'origin/master' into backport-JDK-8273914
 - Backport cfee4512f7048e9cf440078e9eb87d37c7ebcdd9

Changes: https://git.openjdk.org/jdk17u-dev/pull/2864/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2864&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8273914
  Stats: 532 lines in 8 files changed: 473 ins; 20 del; 39 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2864.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2864/head:pull/2864

PR: https://git.openjdk.org/jdk17u-dev/pull/2864