added some micro benchmarks (SocketChannelCompare does direct comparison)

8233081: C1: PatchingStub for field access copies too much Reviewed-by: thartmann, dlong

8232896: ZGC: Enable C2 clone intrinsic Reviewed-by: pliden, kvn

8232880: Update test documentation with additional settings for client UI tooltip tests Reviewed-by: aivanov, serb, ihse

8233574: Shenandoah: build is broken without jfr Reviewed-by: rkennke, shade

8233495: Some fieldDescriptor methods can pass existing constantPoolHandle Reviewed-by: lfoltan, coleenp

8233494: Avoid calling MallocTracker::record_malloc and record_free when NMT is off Reviewed-by: mdoerr, zgu

8233429: Minimal and zero VM build broken after JDK-8227003 Reviewed-by: iveresov, shade, thartmann Contributed-by: igor.veresov@oracle.com, fujie@loongson.cn

8233019: java.lang.Class.isPrimitive() (C1) returns wrong result if Klass* is aligned to 32bit Reviewed-by: mdoerr, dlong, aph

8233422: Extra space in the title of the HTML javadoc page Reviewed-by: ihse, erikj

8232734: [TESTBUG] avoid using JDK symbols in ExtraSymbols.symbols.txt Reviewed-by: ccheung

8232919 : If user installs msi and exe, two installations are found in Add/Remove Submitted-by: asemenyuk Reviewed-by: aherrick, almatvee

Merge

8233091: Backout JDK-8212117: Class.forName loads a class but not linked if class is not initialized Reviewed-by: alanb, dholmes, mchung

8233519: Put java/nio/channels/DatagramChannel/Unref.java on the problem list Reviewed-by: alanb, lancea

8233520: Shenandoah: do not sleep when thread is attaching Reviewed-by: rkennke

Merge

8233232: AArch64: Shenandoah: jni_fast_GetLongField is broken Reviewed-by: shade, rkennke

8233291: [TESTBUG] tools/jlink/plugins/VendorInfoPluginsTest.java fails with debug or non-server VMs Reviewed-by: mchung

8232984: Upgrading Joni License version to 2.1.16 Reviewed-by: coffeys Contributed-by: kiran.sidhartha.ravikumar@oracle.com

8233285: Demangling C++ symbols in jhsdb jstack --mixed Reviewed-by: cjplummer, sspitsyn, ihse

8232973: Potential infinite loop in macOS hotspot agent Reviewed-by: stuefe, cjplummer, sspitsyn

Merge

8232951: TestG1ParallelPhases.java fails with phase NonYoungFreeCSet not found Reviewed-by: lkorinth, kbarrett

8233383: Various minor fixes Reviewed-by: erikj

8233381: Update copyright year in build system files Reviewed-by: erikj

8232367: Update the jdk/java/net/httpclient tests to RS TCK 1.0.3 Reviewed-by: dfuchs

8230847: Trees.getScope may crash when invoked for statement inside switch. Summary: More thoroughly avoiding side-effects when attributing (to) for Trees.getScope. Reviewed-by: mcimadamore

8233202: exclude javax/swing/plaf/basic/BasicGraphicsUtils/8132119/bug8132119.java Reviewed-by: clanger

8233078: fix minimal VM build on Linux ppc64(le) Reviewed-by: mdoerr, lucy