RFR: 8213347: [JVMCI] remove use of reflection in JVMCI

[Doug Simon]

Thanks for the review. I've updated the copyright years in situ.

-Doug

> On 6 Nov 2018, at 17:24, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
> 
> Looks fine. Please, update Copyright years in changed files.
> 
> Thanks,
> Vladimir
> 
> On 11/5/18 2:16 AM, Doug Simon wrote:
>> The use of reflection in jdk.vm.ci.services.Services and jdk.vm.ci.services.internal.ReflectionAccessJDK comes from the original JDK 8 based JVMCI code where care had to be taken that JVMCI could be compiled on JDK 8. This use of reflection is no longer necessary since JDK 9 and this webrev removes it.
>> The webrev also includes some minor Checkstyle related clean ups that I noticed when editing the code in Eclipse.
>> https://bugs.openjdk.java.net/browse/JDK-8213347
>> http://cr.openjdk.java.net/~dnsimon/8213347
>> -Doug