RFR: 8235757 : Rename SupportedGC to IncludedGC

[Per Liden]

Looks good (and trivial)!

/Per

On 12/11/19 12:27 PM, Stefan Karlsson wrote:
> Hi all,
> 
> Please review this trivial patch to rename SupportedGC (and associated 
> macros and functions) to IncludedGC.
> 
> https://cr.openjdk.java.net/~stefank/8235757/webrev.01/
> https://bugs.openjdk.java.net/browse/JDK-8235757
> 
> I want to do this name change to disambiguate an upcoming addition to 
> GCConfig::is_gc_supported, where built-in GCs doesn't mean that the GC 
> is supported on the current platform.
> 
> I'm using the name IncludedGC because it reflects our usage of 
> INCLUDE_*GC macros and defines.
> 
> Thanks,
> StefanK