[jdk21u-dev] RFR: 8374642: EscapeHash macro fails with GNU make 4.3 and 4.4

[Goetz Lindenmaier]

I backport this for parity with 21.0.11-oracle

Clean patch, i don't see why the skara command did not work.

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Commit messages:
 - backport 383fe1efc3a23385b8576e20f458f91085c6325e

Changes: https://git.openjdk.org/jdk21u-dev/pull/2573/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2573&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374642
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2573.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2573/head:pull/2573

PR: https://git.openjdk.org/jdk21u-dev/pull/2573