[lworld] RFR: Merge jdk

[David Simms]

Merge tag 'jdk-16+9' into lworld_merge_jdk_16_9
Added tag jdk-16+9 for changeset c075a286cc7d

# Conflicts:
#	src/hotspot/share/opto/type.cpp
#	src/hotspot/share/prims/jvmtiImpl.cpp
#	src/jdk.compiler/share/classes/com/sun/tools/javac/code/Flags.java

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

Commit messages:
 - Merge tag 'jdk-16+9' into lworld_merge_jdk_16_9
 - 8248158: Configure fails with autoconf not found even though it's installed
 - 8235573: Move JFR ObjectSample oop into OopStorage
 - 8139875: [TESTBUG] Improve nsk/stress/stack/* tests
 - 8248445: Use of AbsI/AbsL nodes should be limited to supported platforms
 - 8250920: Increase @jls usage in core reflection
 - 8249030: clean up FileInstaller $test.src $cwd in vmTestbase_nsk_jdi tests
 - 8251128: remove vmTestbase/vm/compiler/jbe/combine
 - 8251031: Some vmTestbase/nsk/monitoring/RuntimeMXBean tests fail with hostnames starting from digits
 - 8248906: runtime/Thread/ThreadObjAccessAtExit.java fails due to OutOfMemoryErrors
 - ... and 67 more: https://git.openjdk.java.net/valhalla/compare/f543f733...35629cc1

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lworld: https://webrevs.openjdk.java.net/?repo=valhalla&pr=173&range=00.0
 - jdk: https://webrevs.openjdk.java.net/?repo=valhalla&pr=173&range=00.1

Changes: https://git.openjdk.java.net/valhalla/pull/173/files
  Stats: 7242 lines in 1368 files changed: 3642 ins; 2802 del; 798 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/173.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/173/head:pull/173

PR: https://git.openjdk.java.net/valhalla/pull/173