typeset serialization cache

stacktrace serialization cache

fix merge error

New metadata system for oldobjects built on top of simplified tagging model. Caching and serialization improvements. Flushpoint checkpoint with chunkheader contents.

8230116: Test workaround to Klass::_class_loader_data sometimes NULL problem Summary: This is a low frequency problem that we are seeing internally, this patch is mostly to rule out one theory. Reviewed-by: dcubed

8230104: JNU_IsInstanceOfByName needs const parameter Reviewed-by: alanb, rriggs Contributed-by: andrewluotechnologies@outlook.com

8229485: Add decrementExact(), incrementExact(), and negateExact() to java.lang.StrictMath Summary: three methods are added to StrictMath for consistency with Math. Tests are updated accordingly. Reviewed-by: bpb, lancea, igerasim, dfuchs, joehw, rriggs Contributed-by: Julia Boes <julia.boes@oracle.com>

8230058: Replace exception from sun.rmi.runtime.Log#getSource() with StackWalker Reviewed-by: mchung, rriggs Contributed-by: kustos@gmx.net

8230011: Consolidate duplicated classpath parsing code in classLoader.cpp Reviewed-by: ccheung, fparain

8229388: ErrorHandler and ContentHandler contain ambiguous/unfinished specification Reviewed-by: lancea

8229337: java.lang.Math class doc should be adjusted regarding -Exact methods Reviewed-by: rriggs, bpb Contributed-by: Julia Boes <julia.boes@oracle.com>

Add test for Recording::setFlushInterval

Add support for checkpoint aware flushing

Rename flush to flush-interval and add test for jcmd and -XX:StartFlightRecording

Add example apps

Fix warning