RFR: 8205340: [lworld] Re-enable _hashCode, _identityHashCode and _newArray intrinsics

[Roland Westrelin]

Hi Tobias,

Thanks for looking at this.

> this looks good but shouldn't we just go the slow path in inline_native_hashcode() instead of
> deoptimizing?

Right. Not sure why I thought it was a problem.

http://cr.openjdk.java.net/~roland/8205340/webrev.01/

Roland.