RFR (S) 8165929: Constify arguments of Copy methods

[harold seigel]

Hi Coleen,

This change looks good.

Thanks, Harold

On 2/7/2018 10:35 AM, coleen.phillimore at oracle.com wrote:
> I actually didn't see any calls where const was cast away, and I 
> wasn't going to change them anyway.  Most of the calls to the Copy 
> functions cast both arguments to HeapWord when there's casting 
> involved.  Anyway, this should help for future uses and cleanups. This 
> is very limited and hopefully a very boring review.
>
> I wasn't able to test PPC and AARCH64, but tested Oracle's current and 
> former supported platforms with this change (note 32 bit arm reverses 
> arguments to one of the _Copy functions).   I compiled with Zero but 
> can't run Zero for some reason unrelated.
>
> open webrev at http://cr.openjdk.java.net/~coleenp/8165929.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8165929
>
> Thanks,
> Coleen