8228364: Shenandoah: Remove unused code from ShenandoahBarrierSetC1 Reviewed-by: shade

8227766: CheckUnhandledOops is broken in MemAllocator Summary: Save oop created in handle more eagerly, so CheckUnhandledOops doesn't bash it. Reviewed-by: lfoltan, eosterlund

8227435: Perf::attach() should not throw a java.lang.Exception Reviewed-by: sspitsyn, clanger, dholmes

8227834: build.log output from failing commands : include the hs_error file path in case of crashes in build Reviewed-by: tbell

8227247: tools/sjavac/IdleShutdown.java fails with AssertionError: Error too big on windows Reviewed-by: jjg, stuefe

8073213: javadoc of PushbackInputStream methods should specify NullPointerExceptions Reviewed-by: lancea, darcy

8228204: Fix for JDK-8067801 breaks java/io/NegativeInitSize.java Reviewed-by: lancea

8067801: Enforce null check for underlying I/O streams Reviewed-by: lancea

8131664: Javadoc for PrintStream is now incorrect Reviewed-by: lancea, darcy

Added tag jdk-14+6 for changeset 443f7359b34d

8206179: com/sun/management/OperatingSystemMXBean/GetCommittedVirtualMemorySize.java fails with Committed virtual memory size illegal value Reviewed-by: sspitsyn, cjplummer

8227090: G1 does not account the OptMergeRS in cost per card calculation Reviewed-by: sangheki, kbarrett

8227089: Add timing information for merging humongous remembered sets Reviewed-by: sangheki, kbarrett

8227084: Add timing information for merge heap root preparation Reviewed-by: sangheki, kbarrett

8227671: G1: assert_used_and_recalculate_used_equal performs work in product builds Reviewed-by: kbarrett, sangheki

8226232: Move merge heap roots code out from G1RemSetScanState Reviewed-by: sangheki, kbarrett