[lworld] Integrated: Merge jdk

[David Simms]

Merge tag 'jdk-16+4' into lworld_merge_jdk_16_4
Added tag jdk-16+4 for changeset e2622818f0bd

# Conflicts:
#	make/test/BuildMicrobenchmark.gmk
#	src/hotspot/share/opto/memnode.cpp
#	src/hotspot/share/opto/type.cpp
#	src/hotspot/share/runtime/javaCalls.cpp

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

Commit messages:
 - Merge tag 'jdk-16+4' into lworld_merge_jdk_16_4
 - 8244724: CTW: C2 compilation fails with "Live Node limit exceeded limit"
 - 8248563: Gtest CFLAGS/warnings is not properly handled
 - 8248526: configure script failed on WSL in May 2020 update
 - Merge
 - 8246493: JDI stress/serial/mixed002 needs to use WhiteBox.deflateIdleMonitors support
 - 8248409: some jdk/javadoc/doclet tests fail (JDK 15)
 - Merge
 - 8246114: java/net/MulticastSocket/Promiscuous.java fails after 8241072 (multi-homed systems)
 - 8248048: ZGC: AArch64: SIGILL in load barrier register spilling
 - ... and 91 more: https://git.openjdk.java.net/valhalla/compare/93cde007...2cbcd88c

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lworld: https://webrevs.openjdk.java.net/valhalla/144/webrev.00.0
 - jdk: https://webrevs.openjdk.java.net/valhalla/144/webrev.00.1

Changes: https://git.openjdk.java.net/valhalla/pull/144/files
  Stats: 9712 lines in 346 files changed: 4620 ins; 3764 del; 1328 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/144.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/144/head:pull/144

PR: https://git.openjdk.java.net/valhalla/pull/144