RFR(XS) 8210434: [Graal] 8209301 prevents GitHub Graal from compiling with latest JDK

[Doug Simon]

Looks good to me.

> On 10 Sep 2018, at 22:08, dean.long at oracle.com wrote:
> 
> http://cr.openjdk.java.net/~dlong/8210434/webrev/
> https://bugs.openjdk.java.net/browse/JDK-8210434
> 
> This change reverts the 8209301 rename in AOTCompiledClass and adds back HotSpotResolvedObjectType.isAnonymous to preserve compatibility.
> 
> dl