fixing some compiler warnings (finally)

Author: torbjoernk

include/pfasst/config.hpp

@@ -102,15 +102,15 @@ namespace pfasst
 
 
     template<typename T>
-    static const T get_value(const string& name, const T& default_val)
+    static T get_value(const string& name, const T& default_val)
     {
       return Options::get_instance().get_variables_map().count(name) 
               ? Options::get_instance().get_variables_map()[name].as<T>() : default_val;
     }
 
 
     template<typename T>
-    static const T get_value(const string& name)
+    static T get_value(const string& name)
     {
       return Options::get_instance().get_variables_map()[name].as<T>();
     }

include/pfasst/quadrature.hpp

@@ -29,8 +29,7 @@ namespace pfasst
   namespace quadrature
   {
     template<typename precision = pfasst::time_precision>
-    shared_ptr<IQuadrature<precision>> quadrature_factory(const size_t nnodes,
-                                               const QuadratureType qtype)
+    shared_ptr<IQuadrature<precision>> quadrature_factory(const size_t nnodes, const QuadratureType qtype)
     {
       if (qtype == QuadratureType::GaussLegendre) {
         return make_shared<GaussLegendre<precision>>(nnodes);
@@ -112,7 +111,7 @@ namespace pfasst
     // note: GCC fails with "error: explicit template specialization cannot have a storage class"
     //       if this template specialization is also declared 'static'; Clang does not care.
     template<>
-    const pfasst::quadrature::QuadratureType get_value(const string& name)
+    pfasst::quadrature::QuadratureType get_value(const string& name)
     {
       const string type = Options::get_instance().get_variables_map()[name].as<string>();
       if (type == "gauss-lobatto") {
@@ -133,8 +132,8 @@ namespace pfasst
     // note: GCC fails with "error: explicit template specialization cannot have a storage class"
     //       if this template specialization is also declared 'static'; Clang does not care.
     template<>
-    const pfasst::quadrature::QuadratureType get_value(const string& name,
-                                                       const pfasst::quadrature::QuadratureType& default_value)
+    pfasst::quadrature::QuadratureType get_value(const string& name,
+                                                 const pfasst::quadrature::QuadratureType& default_value)
     {
       if (Options::get_instance().get_variables_map().count(name) == 1) {
         return pfasst::config::get_value<pfasst::quadrature::QuadratureType>(name);