Bug fix for Reduction.

Previously, reduction was comparing a state number against an automaton
index, which are not the same units.  This meant it was thinking that
some rules had applied, and some had not ... when it was the other way
around.

Author: DavePearce

src/wyrw/core/Reduction.java

@@ -41,7 +41,7 @@ public int step(int from, int activation) {
 		AbstractActivation a = state.activation(activation);
 		int target = a.apply(automaton);
 		int to;
-		if (target != Automaton.K_VOID && from != target) {
+		if (target != Automaton.K_VOID && a.target() != target) {
 			// Rule application produced an updated automaton
 			automaton.minimise();
 			automaton.compact(0);