8218692: Switch to JCov build which supports byte code version 57 Reviewed-by: erikj

8210280: Unnecessary reallocation when invoking HashMap.putAll() Reviewed-by: martin, mvala, igerasim, chegar, rriggs Contributed-by: Michal Vala <mvala@redhat.com>, Doug Lea <dl@cs.oswego.edu>, Martin Buchholz <martinrb@google.com>

8200109: NMT: diff_malloc_site assert(early->flags() == current->flags(), "Must be the same memory type") Reviewed-by: shade, coleenp

8218580: endpoint identification algorithm should be case-insensitive Reviewed-by: jnimeh

8205654: serviceability/dcmd/framework/HelpTest.java timed out Reviewed-by: sspitsyn, dholmes

8217990: C2 UseOptoBiasInlining: load of markword optimized to 0 if running with -XX:-EliminateLocks Reviewed-by: thartmann, mdoerr, rrich, kvn

8218593: Symbol leak in prepend_host_package_name Summary: add appropriate refcounting for Symbols stomped by parsing Reviewed-by: hseigel, zgu

8217328: Rename CollectionSetChooser to G1CollectionSetChooser Reviewed-by: lkorinth, kbarrett

8217330: Split G1CollectionSetChooser into collection set candidate container and the chooser algorithm Reviewed-by: lkorinth, kbarrett

8217778: StringTable cleanup miscalculates amount of dead objects Reviewed-by: kbarrett