8215550: Debugger does not work after reattach Reviewed-by: cjplummer, sspitsyn

8218041: Assorted wrong/missing includes Reviewed-by: dholmes, kbarrett, stefank, shade

Added tag jdk-13+6 for changeset b5f05fe4a6f8

8217371: Incorrect LP64 guard in x86.ad after JDK-8210764 (Update avx512 implementation) Reviewed-by: kvn, neliasso, thartmann

8218084: Revert JDK-8218057 Reviewed-by: darcy, ctornqvi

Merge

8207922: ctw of jdk.security.auth failed with "Unexpected zero exit codebefore finishing all compilations" Reviewed-by: roland, thartmann

8215921: There is no change when select different Foreground and Background by mouse. Reviewed-by: serb, psadhukhan

8217666: gc/nvdimm/* should not be included any tiers Reviewed-by: iignatyev, lkorinth

8217578: Shenandoah cleanup unused timings after concurrent string table change Reviewed-by: shade

8217994: os::print_hex_dump should be more resilient against unreadable memory Reviewed-by: zgu, stuefe, lucy

8216562: UnknownBodyLength sometimes fails due to "Connection reset by peer" Summary: uses a longer linger time and avoids closing socket too early. Reviewed-by: chegar

8218031: Zero broken after JDK-8217922 (Compiler dead code removal) Reviewed-by: thartmann, sgehwolf, shade Contributed-by: Ao Qi <aoqi@loongson.cn>

8217916: Build compare script is not comparing jmods Reviewed-by: ihse