Merge

8184738: CTW fails with assert(!method->method_holder()->is_not_initialized()) failed: method holder must be initialized Reviewed-by: kvn

8183149: [AOT] SEGV in AMD64MathStub.pow: alignment for ArrayDataPointerConstant is not honored Reviewed-by: kvn

8185717: Make ModuleEntry->module() return an oop not a jobject Summary: Change ModuleEntry::module() to return an oop and add a ModuleEntry::module_handle() that returns a jobject Reviewed-by: shade, coleenp, lfoltan