RFR(S) 8077504: Unsafe load can loose control dependency and cause crash

[Vladimir Kozlov]

Looks good. But fix second comment in memnode.hpp - it has '’' instead 
of '.

Thanks,
Vladimir

On 5/20/15 7:19 AM, Roland Westrelin wrote:
> Thanks Andrew and Vladimir. Here is a new webrev with an enum:
>
> http://cr.openjdk.java.net/~roland/8077504/webrev.02/
>
> Roland.
>