RFR(M) 8189116: Give the jdk.internal.vm.compiler.management only the permissions it really needs to expose the bean

[Jaroslav Tulach]

Hi.
I believe I have a fix for JDK-8189116 - the 
jdk.internal.vm.compiler.management needs only few permissions as shown in my 
webrev: http://cr.openjdk.java.net/~jtulach/8189116/webrev.01/

I have executed all the tests I found and it seems none of them regressed. 
Also the Graal Compiler MX bean is properly exposed when the built JDK is 
launched with

./build/linux-x64/jdk/bin/java -XX:+UnlockExperimentalVMOptions -XX:
+EnableJVMCI -XX:+UseJVMCICompiler -jar ...

Please take a look and review my changes. Thanks a lot.
-jt