Fixed Minimax search to use the new GameTreeNode, MinimaxProperty classes.

The previous implementation was overly complicated and may have been buggy except when searching only 2 plies ahead.

src/net/woodyfolsom/msproj/tree/AlphaBetaPropeties.java

@@ -0,0 +1,18 @@
+package net.woodyfolsom.msproj.tree;
+
+public class AlphaBetaPropeties extends GameTreeNodeProperties{
+	int alpha = 0;
+	int beta = 0;
+	public int getAlpha() {
+		return alpha;
+	}
+	public void setAlpha(int alpha) {
+		this.alpha = alpha;
+	}
+	public int getBeta() {
+		return beta;
+	}
+	public void setBeta(int beta) {
+		this.beta = beta;
+	}
+}