Summary: Remove ResourceMark in StackMapReader::parse_verification_type() to avoid freeing of error message.
Reviewed-by: zmajo, dcubed, hseigel

Summary: Clean ICs of unloaded nmethods in sweeper to avoid impact on safepoint duration.
Reviewed-by: kvn, mdoerr

Summary: Removed nmethod transition to zombie outside of sweeper. Added cleaning of ICs of unloaded nmethods.
Reviewed-by: kvn, iveresov

Summary: Remove active ICStubs from zombie nmethods
Reviewed-by: kvn, iveresov

Reviewed-by: ihse, mikael, brutisso

Reviewed-by: ihse, mikael, brutisso

Reviewed-by: jwilhelm, jmasa

Reviewed-by: tbell, mikael

Reviewed-by: tbell, mikael

Reviewed-by: kvn, vlivanov
Contributed-by: vlad.ureche@gmail.com