RFR: 8202366,,Add macro for common loop in GCConfig

[Erik Österlund]

Hi Per,

Looks good.

Thanks,
/Erik

On 2018-04-27 11:42, Per Liden wrote:
> In GCConfig, we loop over the list of supported GCs in many places. We 
> could simplify the code a bit by adding a FOR_EACH_SUPPORTED_GC macro.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8202366
> Webrev: http://cr.openjdk.java.net/~pliden/8202366/webrev.0
>
> /Per