Generate a polymorphic attribute write

Property definitions

nitc $ JavaCompilerVisitor :: write_attribute
	# Generate a polymorphic attribute write
	fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) do
		# TODO check_recv_notnull(recv)
		add "{recv}.attrs.put(\"{a.jname}\", {autobox(value, compiler.mainmodule.object_type)});"
	end
src/compiler/java_compiler.nit:1114,2--1118,4