Method CreateArrayClass

Create an array class (i.e. the class object for the array, not the array itself). "descriptor" looks like "[C" or "[[[[B" or "[Ljava/lang/String;". If "descriptor" refers to an array of primitives, look up the primitive type's internally-generated class object. "class_loader" is the class loader of the class that's referring to us. It's used to ensure that we're looking for the element type i