Reviewed-by: dholmes, alanb, rriggs

8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

Reviewed-by: clanger, andrew

Reviewed-by: erikj, dholmes

Summary: Introduce alignment-safe Copy::conjoint_swap and JVM_CopySwapMemory
Reviewed-by: mikael, dholmes

Reviewed-by: simonis, goetz
Contributed-by: matthias.baesken@sap.com, martin.doerr@sap.com

Reviewed-by: simonis, goetz
Contributed-by: matthias.baesken@sap.com, martin.doerr@sap.com

Reviewed-by: kvn

Reviewed-by: kvn

8067923: AIX: link libjvm.so with -bernotok to detect missing symbols at build time and suppress warning 1540-1639
Reviewed-by: goetz

Summary: Add EXTRA_LDFLAGS to linker flags for relevant libraries.
Reviewed-by: ihse

Reviewed-by: mgronlun, kamg

Reviewed-by: kvn

Summary: Introduce alignment-safe Copy::conjoint_swap and JVM_CopySwapMemory
Reviewed-by: mikael, dholmes

Reviewed-by: simonis, kvn

Reviewed-by: kvn

Summary: Extend ELF-decoder to support PPC64 function descriptor tables
Reviewed-by: kvn, zgu

Reviewed-by: kvn