[lworld] RFR: Merge jdk

[David Simms]

Merge jdk-24+20

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

Commit messages:
 - Logical merge fixes, adjust testing
 - Merge tag 'jdk-24+20' into lworld_merge_jdk_24_20
 - 8338851: Hoist os::Posix::realpath() to os::realpath() and implement on Windows
 - 8342338: Remove redundant IIOPURLTest.java
 - 8341715: PPC64: ObjectMonitor::_owner should be reset unconditionally in nmethod unlocking
 - 8342042: PPC64: compiler_fast_unlock_object flags failure instead of success
 - 8340279: Open source several AWT Dialog tests - Batch 2
 - 8341072: Open source several AWT Canvas and Rectangle related tests
 - 8341328: Refactor initial Assertion Predicate creation into separate classes
 - 8340313: Crash due to invalid oop in nmethod after C1 patching
 - ... and 88 more: https://git.openjdk.org/valhalla/compare/c7433814...f58412b2

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lworld: https://webrevs.openjdk.org/?repo=valhalla&pr=1303&range=00.0
 - jdk: https://webrevs.openjdk.org/?repo=valhalla&pr=1303&range=00.1

Changes: https://git.openjdk.org/valhalla/pull/1303/files
  Stats: 24451 lines in 535 files changed: 20212 ins; 1668 del; 2571 mod
  Patch: https://git.openjdk.org/valhalla/pull/1303.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1303/head:pull/1303

PR: https://git.openjdk.org/valhalla/pull/1303