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
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

Summary: updated files with 2011, 2012 and 2013 years according to the file's last updated date
Reviewed-by: tbell, lancea, chegar

Reviewed-by: erikj, tbell

Reviewed-by: chegar, ksrini

Summary: Warnings fixed.  Also reviewed by serguei.spitsyn@oracle.com, who is not yet an openjdk reviewer
Reviewed-by: ksrini

Reviewed-by: darcy, weijun