AtomicLongArray getAndAccumulate/accumulateAndGet have int type for new value arg

Two SE8 new lambda-compatible methods

http://download.java.net/jdk8/docs/api/java/util/concurrent/atomic/AtomicLongArray.html#getAndAccumulate%28int,%20int,%20java.util.function.LongBinaryOperator%29
http://download.java.net/jdk8/docs/api/java/util/concurrent/atomic/AtomicLongArray.html#accumulateAndGet%28int,%20int,%20java.util.function.LongBinaryOperator%29

have "int x" parameter

Parameters:
    x - the update value


which looks like a mistake.

"x" should have type "long".