The `...` symbol to indicate varargs

Property definitions

	# The `...` symbol to indicate varargs
	var n_dotdotdot: nullable TDotdotdot = null is writable

src/parser/parser_nodes.nit:1806,2--1807,56

	redef fun n_dotdotdot=(node)
	do
		_n_dotdotdot = node
		if node != null then node.parent = self
	end

src/parser/parser_prod.nit:2466,2--2470,4