8254354: Add a withInvokeExactBehavior() VarHandle combinator

...ase/share/classes/java/lang/invoke/IndirectVarHandle.java

src/java.base/share/classes/java/lang/invoke/Invokers.java

...e/classes/java/lang/invoke/MemoryAccessVarHandleBase.java

...sses/java/lang/invoke/MemoryAccessVarHandleGenerator.java

src/java.base/share/classes/java/lang/invoke/VarHandle.java

....base/share/classes/java/lang/invoke/VarHandleGuards.java

src/java.base/share/classes/java/lang/invoke/VarHandles.java

.../share/classes/java/lang/invoke/X-VarHandle.java.template

...s/java/lang/invoke/X-VarHandleByteArrayView.java.template

test/jdk/java/lang/invoke/VarHandles/VarHandleTestExact.java

...ro/org/openjdk/bench/java/lang/invoke/VarHandleExact.java

...g/openjdk/bench/jdk/incubator/foreign/VarHandleExact.java