[jdk21u-dev] RFR: 8323667: Library debug files contain non-reproducible full gcc include paths

[Andrew Leonard]

Native library debug files contain the full gcc system include paths, which then results in the native library being non-reproducible (via the CRC bytes), if built with differing gcc include path location.
This is a backport of the jdk fix to -fdebug-prefix-map these gcc paths when absolute paths are not allowed for a release build.

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

Commit messages:
 - Backport 57fad677819ae3142782f811a8fba94b38f5a74c

Changes: https://git.openjdk.org/jdk21u-dev/pull/251/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=251&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323667
  Stats: 55 lines in 1 file changed: 54 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/251.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/251/head:pull/251

PR: https://git.openjdk.org/jdk21u-dev/pull/251