engine, lang, lib: Re-order for consistency

Some small cleanups to make room for future patches.

engine/graph/state.go

@@ -43,14 +43,15 @@ type State struct {
 	Program  string
 	Version  string
 	Hostname string
-	World    engine.World
+
+	//Converger *converger.Coordinator
+
+	World engine.World
 
 	// Prefix is a unique directory prefix which can be used. It should be
 	// created if needed.
 	Prefix string
 
-	//Converger *converger.Coordinator
-
 	// Debug turns on additional output and behaviours.
 	Debug bool