RFR(XS): 8149076: [JVMCI] missing ResourceMark in JVMCIRuntime::initialize_HotSpotJVMCIRuntime

[Christian Thalinger]

Looks good.  Igor, could you review the test changes?

> On Feb 4, 2016, at 5:57 PM, Tom Rodriguez <tom.rodriguez at oracle.com> wrote:
> 
> https://bugs.openjdk.java.net/browse/JDK-8149076 <https://bugs.openjdk.java.net/browse/JDK-8149076>http://cr.openjdk.java.net/~never/8149076/webrev/ <http://cr.openjdk.java.net/~never/8149076/webrev/>
> 
> There's no explicit ResourceMark in JVMCIRuntime::initialize_HotSpotJVMCIRuntime but generally callers have one that it can use. However calling JVMCI.getRuntime() from a newly created thread will assert because there doesn't happen to be a containing resource mark. It should just have it's own.  I also modified to catch this case JVM_GetJVMCIRuntimeTest test to catch this case which required removing the unnecessary use of reflection, since this also introduced a containing ResourceMark that made the problem disappear.  Tested with test case.
> 
> tom

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