RFR (tedious) 8173070: Remove ValueObj class for allocation subclassing for runtime code

[Stefan Karlsson]

Looks good. The comment in allocation.hpp is a bit weird, but Coleen has 
promised that it goes away in subsequent patches.

StefanK

On 2018-03-08 19:26, coleen.phillimore at oracle.com wrote:
>
> This change removes VALUE_OBJ_CLASS_SPEC as subclass for classes in 
> the runtime code.  I decided to split this into 3 parts to divide the 
> clicking.  See the bug for discussion of why we would like to remove 
> this null class on most platforms in favor of the link time check to 
> disallow Hotspot code from calling global operators new and delete 
> (bug https://bugs.openjdk.java.net/browse/JDK-8198243)
>
> Tested with mach5 nightly tests with the full set of changes and mach5 
> tier1-2 with this set.
>
> open webrev at http://cr.openjdk.java.net/~coleenp/8173070.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8173070
>
> I'll update the copyrights with hg commit.
>
> Thanks,
> Coleen