False negative: multianewarray may raise IllegalAccessError

Linkage Checker may miss an invalid reference for multi-dimensional array creation.

Linkage Checker only looks for the class references (Class_info data) in the constant pool of class files. However, JVM operation "multianewarray" creates multi-dimensional array of a class without the class reference. It uses a class reference of array of array of the class.

Example https://gist.github.com/suztomo/d8a4bcadb06ac22393321f9d82f05e6c:

```
#2 = Class #19 // "[[Lfoo/B;"
...

2: multianewarray #2, 2 // class "[[Lfoo/B;"
```