Reviewed-by: sla, dholmes

6651256: jstack: DeleteGlobalRef method call doesn't lead to descreasing of global refs count shown by jstack
Summary: jni_DeleteGlobalRef does not really release the jni handle, instead, set the handle point to JNIHandles::_deleted_handle which holds an oop instance (java/lang/Object) in Java heap and never be GC'ed. When counting number of global reference, it counts all the handles on the chain list, which includes the already deleted ones.
Reviewed-by: zgu, sla, coleenp
Contributed-by: yumin.qi@oracle.com

Summary: Bailout if OSR entry is unreachable.
Reviewed-by: thartmann
Contributed-by: NAndreas Woess <andreas.woess@oracle.com>

Reviewed-by: kvn, dholmes, bobv

Summary: The GetOwnedMonitorInfo() should not return a pending monitor
Reviewed-by: dcubed

Summary: Change TypeF:eq and TypeD:eq to compare NaN values using a bitwise comparison.
Reviewed-by: kvn
Contributed-by: NStefan Anzinger <stefan.anzinger@oracle.com>

Summary: Adds a missing null check (guarantee) found by Parfait.
Reviewed-by: coleenp, shade

Summary: C1 intrinsics for System.nanoTime(), System.currentTimeMillis() and JVM.counterTime() should be pinned.
Reviewed-by: kvn, vlivanov, iveresov

Summary: Backed out changeset 678f11cc769e
Reviewed-by: coffeys

Reviewed-by: jeff

Reviewed-by: thartmann, simonis, mbaesken

Summary: Added required explicit NULL checks
Reviewed-by: thartmann, kvn

Reviewed-by: dholmes, zgu

Summary: Change class version to version accepted by JDK 8.
Reviewed-by: dholmes, hseigel

Summary: Fixed missing null checks on the result of CodeCache::find_blob() found by Parfait.
Reviewed-by: shade, kvn

Summary: Fixed a missing null check on the return value of AddPNode::Ideal_base_and_offset() found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on n->in(0) found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on the return value of MachNodeGenerator() found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on the return value of InitializeNode::allocation() found by Parfait.
Reviewed-by: zmajo

Summary: We need to check ConstMethod::method() for NULL before dereferencing.
Reviewed-by: kvn, iignatyev