Merge

Added connection setup time benchmark

8232853: AuthenticationFilter.Cache::remove may throw ConcurrentModificationException Summary: Change implementation to use iterator instead of plain LinkedList Reviewed-by: dfuchs, vtewari

8233941: adlc should not generate Pipeline_Use_Cycle_Mask::operator= Summary: Removed useless = operator. Reviewed-by: kvn, thartmann

8233885: Test fails with assert(comp != __null) failed: Ensure we have a compiler Reviewed-by: thartmann, iveresov

8224817: Implementation of JEP 364: ZGC on macOS Reviewed-by: pliden, stefank

8233506: ZGC: the load for Reference.get() can be converted to a load for strong refs Reviewed-by: thartmann, neliasso, pliden

8233884: Avoid looking up standard charsets in security libraries Reviewed-by: coffeys

8233900: [JVMCI] improve help text for EnableJVMCIProduct option Reviewed-by: kvn

8233529: loopTransform.cpp:2984: Error: assert(p_f->Opcode() == Op_IfFalse) failed Summary: Strengthened asserts in locate_pre_from_main() and added a check for is_main_no_pre_loop(). Reviewed-by: kvn, vlivanov

8232684: Make switch expressions final Reviewed-by: alanb, mcimadamore, kvn

8231863: Crash if classpath is read from @argument file and the main gets option argument Reviewed-by: alanb, mchung Contributed-by: Mat Carter <matthew.carter@microsoft.com>

updates to previous changeset for windows

moved unix socket address out of SOCKETADDRESS structure