Add missing serialVersionUId

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1200351 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math/linear/ConjugateGradient.java

@@ -194,6 +194,8 @@ public class ConjugateGradient
         final IterativeLinearSolverEvent event;
         event = new ConjugateGradientEvent(this) {
 
+            private static final long serialVersionUID = 756911840348776676L;
+
             public RealVector getResidual() {
                 return ArrayRealVector.unmodifiableRealVector(r);
             }

src/main/java/org/apache/commons/math/linear/SymmLQ.java

@@ -1216,6 +1216,8 @@ public class SymmLQ
         final IterativeLinearSolverEvent event;
         event = new IterativeLinearSolverEvent(this) {
 
+           private static final long serialVersionUID = 3656926699603081076L;
+
             @Override
             public RealVector getRightHandSideVector() {
                 return bb;

src/main/java/org/apache/commons/math/optimization/direct/BOBYQAOptimizer.java

@@ -2470,6 +2470,8 @@ public class BOBYQAOptimizer
  * If the path becomes explored, it should just be removed from the code.
  */
 class PathIsExploredException extends RuntimeException {
+    private static final long serialVersionUID = 745350979634801853L;
+
     private static final String PATH_IS_EXPLORED
         = "If this exception is thrown, just remove it from the code";