Cache some native settings in the PrismNative Java object.

In particular, we currently cache the numerical method convergence settings.
This allows the values that were used for solution to be recalled at the Java level.

prism/src/prism/PrismNative.java

@@ -93,16 +93,30 @@ public class PrismNative
 		PN_SetLinEqMethodParam(d);
 	}
 	
+	private static int termCrit;
 	private static native void PN_SetTermCrit(int i);
 	public static void setTermCrit(int i)
 	{
 		PN_SetTermCrit(i);
+		// Cache locally too
+		termCrit = i;
+	}
+	public static int getTermCrit()
+	{
+		return termCrit;
 	}
 	
+	private static double termCritParam;
 	private static native void PN_SetTermCritParam(double d);
 	public static void setTermCritParam(double d)
 	{
 		PN_SetTermCritParam(d);
+		// Cache locally too
+		termCritParam = d;
+	}
+	public static double getTermCritParam()
+	{
+		return termCritParam;
 	}
 	
 	private static native void PN_SetMaxIters(int i);