Load the class and create its runtime structures, this loading is explicit

Property definitions

nitc $ VirtualMachine :: load_class
	# Load the class and create its runtime structures, this loading is explicit
	fun load_class(mclass: MClass)
	do
		if mclass.loaded then return

		load_supers(mclass)

		if mclass.abstract_loaded then
			mclass.allocate_vtable(self)
		else
			mclass.make_vt(self, true)
		end
	end
src/vm/virtual_machine.nit:197,2--209,4