Summary: Set the configure enable-jfr flag to true by default.
Reviewed-by: andrew

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

Reviewed-by: shade, adinn, andrew

8223219: Backport of JDK-8199552 to OpenJDK 8 leads to duplicate -fstack-protector flags, overriding --with-extra-cflags
Summary: Apply -fstack-protector to all archs and remove duplication in JDK build
Reviewed-by: sgehwolf

Reviewed-by: lancea, clanger, andrew

Reviewed-by: serb, dmarkov, andrew

Reviewed-by: prr

Reviewed-by: clanger

Reviewed-by: phh

Summary: Compile fdlibm with -O3 and relevant C flags on gcc arches.
Reviewed-by: mbaesken, andrew

Summary: Use 'hg id -i' instead of 'hg tip' for obtaining the source revision
Reviewed-by: andrew

Reviewed-by: phh, martin

Reviewed-by: erikj, dholmes

Summary: Add FONTCONFIG_CFLAGS declaration.
Reviewed-by: erikj, prr

Reviewed-by: erikj, martin, tbell, aph

Summary: 8036003 adds STRIP_POLICY=no_strip conditionals in some areas, but not for ZIP_DEBUGINFO_FILES blocks
Reviewed-by: erikj