orocos_kdl: Support getting eps from WDLS velocity solver

Ensures that all relevant parameters are exposed.

Author: Stephen Roderick

orocos_kdl/src/chainiksolvervel_wdls.hpp

@@ -179,6 +179,11 @@ namespace KDL
          */
         double getSigmaMin()const {return sigmaMin;};
 
+        /**
+         * Request the value of eps
+         */
+        double getEps()const {return eps;};
+
         /**
          * Request the value of lambda for the minimum
          */