changed test threshold, it was too tight for JRockit

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@799913 13f79535-47bb-0310-9956-ffa450edef68

src/test/java/org/apache/commons/math/estimation/MinpackTest.java

@@ -1206,6 +1206,7 @@ public class MinpackTest
                                double[] theoreticalMinParams) {
       super(m, startParams, theoreticalStartCost,
             theoreticalMinCost, theoreticalMinParams);
+      setCostAccuracy(2.5e-8);
     }
 
     @Override

src/test/java/org/apache/commons/math/optimization/general/MinpackTest.java

@@ -1196,6 +1196,7 @@ public class MinpackTest extends TestCase {
                                double[] theoreticalMinParams) {
       super(m, startParams, theoreticalMinCost,
             theoreticalMinParams);
+      setCostAccuracy(2.5e-8);
     }
 
     @Override