Make AbstractEvaluation public

Allow custom implementations of LeastSquaresProblem to use the default
methods for computing the covariance, rms, etc.

JIRA: MATH-1102

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1571307 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math3/fitting/leastsquares/AbstractEvaluation.java

@@ -33,7 +33,7 @@ import org.apache.commons.math3.util.FastMath;
  * @version $Id$
  * @since 3.3
  */
-abstract class AbstractEvaluation implements Evaluation {
+public abstract class AbstractEvaluation implements Evaluation {
 
     /** number of observations */
     private final int observationSize;