The `else` keyword

Property definitions

	# The `else` keyword
	var n_kwelse: TKwelse is writable, noinit

src/parser/parser_nodes.nit:1996,2--1997,42

	redef fun n_kwelse=(node)
	do
		_n_kwelse = node
		node.parent = self
	end

src/parser/parser_prod.nit:3184,2--3188,4