Merge

8220379: Fix doclint handling of headings Reviewed-by: erikj, jlahoda

8220676: [TESTBUG] ProblemList TestCPUSets until the test issue is resolved Summary: Added the test to problem list Reviewed-by: lfoltan

8220366: Optimize Symbol handling in ClassVerifier and SignatureStream Reviewed-by: hseigel, coleenp, lfoltan

8220644: Align required/found pairs in diagnostics Reviewed-by: mcimadamore, jjg

8220281: IBM-858 alias name is missing on IBM00858 charset Summary: Add aliases into IBM charsets Reviewed-by: naoto

8220378: Unused Names constants Reviewed-by: jjg, mcimadamore Contributed-by: Ron Shapiro <ronshapiro@google.com>

8220614: (bf) Buffer absolute slice methods should use Objects.checkFromIndexSize() Reviewed-by: alanb, igerasim, rriggs

8220628: Move the HeapMonitor library to C++ Summary: Migrate libHeapMonitorTest.c to libHeapMonitorTest.cpp Reviewed-by: cjplummer, sspitsyn

8218166: com/sun/jdi/SimulResumerTest.java failure Reviewed-by: dlong, jcbeyler

8220252: Fix Headings in java.naming Reviewed-by: dfuchs

8220502: Inefficient pre-sizing of PhiResolverState arrays in c1_LIRGenerator Reviewed-by: thartmann, kvn

8219579: Remove redundant signature parsing from the verifier Summary: Change verifier signature checking into asserts because ClassFileParser checks signatures for files being verified. Reviewed-by: lfoltan, coleenp, redestad, dholmes

8219585: [TESTBUG] sun/management/jmxremote/bootstrap/JMXInterfaceBindingTest.java passes trivially when it shouldn't Reviewed-by: dfuchs, sballal

8220343: Move scavenge_root_nmethods from shared code Reviewed-by: kvn, eosterlund

8220342: Remove scavenge_root_nmethods_do from VM_HeapWalkOperation::collect_simple_roots Reviewed-by: sspitsyn, ehelin

8220411: Remove ScavengeRootsInCode=0 code Reviewed-by: thartmann, coleenp

8220374: C2: LoopStripMining doesn't strip as expected Reviewed-by: rkennke, thartmann, mdoerr

8220660: [s390]: debug build broken after JDK-8220301 Reviewed-by: shade

8220566: AArch64: Set default vm features for Ampere eMAG CPUs Summary: Set defaults for vendor specific features Reviewed-by: adinn

8220598: Malformed copyright year range in a few files in java.base Reviewed-by: dfuchs, lancea, rriggs, weijun

8193277: SimpleFileObject inconsistency between getName and getShortName Reviewed-by: jjg

8220634: SymLinkArchiveTest should handle not being able to create symlinks Reviewed-by: jjg

Added tag jdk-13+12 for changeset 1d7aec80147a

8220352: Crash with assert(external_guard || result != __null) failed: Invalid JNI handle Summary: Don't delete globalrefs that might still be referenced Reviewed-by: gadams, jcbeyler, sspitsyn

8220345: Use appropriate type for G1RemSetScanState::IsDirtyRegionState Reviewed-by: kbarrett, lkorinth

8220301: Remove jbyte use in CardTable Summary: Use CardTable::CardValue aliased to uint8_t instead. Reviewed-by: kbarrett, shade

8219882: [AOT] Develop regression test for 8218859 Reviewed-by: kvn

8219197: ThreadGroup.enumerate() may return wrong value Summary: ThreadGroup.enumerate(list,n,recurse) should never return a value that is less than n. Reviewed-by: clanger, chegar, prappo

8219597: (bf) Heap buffer state changes could provoke unexpected exceptions Reviewed-by: alanb, rriggs