RFR: 8233359: Add global sized operator delete definitions

[Kim Barrett]

> On Nov 1, 2019, at 1:07 AM, David Holmes <david.holmes at oracle.com> wrote:
> 
> Hi Kim,
> 
> That looks fine and trivial IMO.

Thanks.

> 
> Thanks,
> David
> 
> On 1/11/2019 11:15 am, Kim Barrett wrote:
>> Please review this addition of replacement implementations for the
>> global sized deallocation functions that were added by C++14.
>> Since Visual Studio 2017 or later always provides C++14 or later, we
>> should be including these when using those compiler versions.
>> We also need these definitions when doing experimental C++14 builds
>> with gcc (in preparation for JEP 347), to avoid -Wsized-deallocation
>> warnings (enabled by the recent addition of -Wextra).
>> Rather than trying to determine whether the definitions are needed or
>> not, we add them unconditionally. It's harmless to provide such
>> definitions in non-product builds for pre-C++14 compilers; they just
>> won't ever be called.
>> CR:
>> https://bugs.openjdk.java.net/browse/JDK-8233359
>> Webrev:
>> https://cr.openjdk.java.net/~kbarrett/8233359/open.00/
>> Testing:
>> mach5 tier1