8215549: Shenandoah deduplication cleans up table/queue twice Reviewed-by: rkennke

8215482: check for cycles in type variables can provoke NPE Reviewed-by: mcimadamore

8216308: StackTraceElement::fill_in can use injected Class source-file Reviewed-by: coleenp, dholmes

8216265: [testbug] Introduce Platform.sharedLibraryPathVariableName() and adapt all tests. Summary: Also cleanup some switches over OSes and use File.pathSeparator. Reviewed-by: dholmes, mdoerr

8216973: Kick up cleanup phases in the right places Reviewed-by: shade

8216478: Cleanup HttpResponseImpl back reference to HttpConnection Summary: Retain a reference to Exchange and HttpConnection only when necessary, i.e. for WebSocket initial connection. Reviewed-by: chegar

8199892: Missing landmarks when generating docs using html sources Reviewed-by: jjg

8213249: compiler/graalunit/HotspotTest.java failed in ExplicitExceptionTest Summary: Added -XX:-OmitStackTraceInFastThrow to test flags to avoid empty exception message. Reviewed-by: epavlova, iignatyev, dlong, kvn

8216560: gtest build broken on PPC64 and aarch64 Reviewed-by: shade

8215544: SA: Modify ClhsdbLauncher to add sudo privileges to enable MacOS tests on Mach5 Summary: Check if 'sudo' privileges can be added for executing macOS tests, and if so, add these privileges before executing the tests Reviewed-by: jcbeyler, phh, sballal