Remove unused methods etc.

8230424: Use platform independent code for Thread.interrupt support 8231094: os::sleep in assert message should be changed to JavaThread::sleep Reviewed-by: rehn, dcubed

8231024: Improve the debug info when the output is truncated Reviewed-by: iklam, dholmes

8230870: (zipfs) Add a ZIP FS test that is similar to test/jdk/java/util/zip/EntryCount64k.java Reviewed-by: clanger, martin

make flush events exprimental

update shenandoah

8231124: Missing closedir call with JDK-8223490 Reviewed-by: naoto

8230350: Shenandoah: Assertion failed when GC is cancelled by a worker thread Reviewed-by: rkennke

8230943: False deadlock detection with -XX:+CIPrintCompileQueue after JDK-8163511 Reviewed-by: dholmes, thartmann

remove unstable assert from JfrJavaThreadIterator

renames and restructuring of JfrCheckpointManager

8223490: Optimize search algorithm for determining default time zone Reviewed-by: naoto, rriggs

threadcpu to include excluded threads

folding operations back into subsystems

remove redundant scope

remove write_type

fix typo

new lines

Merge

8231051: Remove check_obj_alignment() and replace with is_object_aligned() Reviewed-by: tschatzl, shade

8230841: Remove oopDesc::equals() Reviewed-by: rkennke, tschatzl

8230808: Remove Access::equals() Reviewed-by: tschatzl, shade

8230796: Remove BarrierSet::oop_equals_operator_allowed() Reviewed-by: tschatzl, shade

8230900: missing ReleaseStringUTFChars in java.desktop native code Reviewed-by: clanger, prr

8230901: missing ReleaseStringUTFChars in serviceability native code Reviewed-by: stuefe, sspitsyn

8230629: jpackage signing on macOS does not work as expected Submitted-by: almatvee Reviewed-by: herrick, asemenyuk

return on flush if no recoring running + more exact lookups for symbols

Merge