The `label` keyword

Property definitions

	# The `label` keyword
	var n_kwlabel: TKwlabel is writable, noinit

src/parser/parser_nodes.nit:1833,2--1834,44

	redef fun n_kwlabel=(node)
	do
		_n_kwlabel = node
		node.parent = self
	end

src/parser/parser_prod.nit:2595,2--2599,4