[parametertreetest][fs1527] Kill int and double overloads of

ParameterTree::get("key", def).

These overloads were using atoi() resp. atof(), effectively ignoring junk at
the end of values.  This led to the situation where a floating point value
"0.5" could be parsed as an int "0" without any diagnostic.

dune/common/parametertree.cc

@@ -166,24 +166,6 @@ std::string ParameterTree::get(const std::string& key, const char* defaultValue)
     return defaultValue;
 }
 
-
-int ParameterTree::get(const std::string& key, int defaultValue) const
-{
-  std::stringstream stream;
-  stream << defaultValue;
-  std::string ret = get(key, stream.str());
-
-  return atoi(ret.c_str());
-}
-
-double ParameterTree::get(const std::string& key, double defaultValue) const
-{
-  if(hasKey(key))
-    return atof((*this)[key].c_str());
-  else
-    return defaultValue;
-}
-
 std::string ParameterTree::ltrim(const std::string& s)
 {
   std::size_t firstNonWS = s.find_first_not_of(" \t\n\r");

dune/common/parametertree.hh

@@ -141,28 +141,6 @@ namespace Dune {
     std::string get(const std::string& key, const char* defaultValue) const;
 
 
-    /** \brief get value as int
-     *
-     * Returns value for given key interpreted as int.
-     *
-     * \param key key name
-     * \param defaultValue default if key does not exist
-     * \return value as int
-     */
-    int get(const std::string& key, int defaultValue) const;
-
-
-    /** \brief get value as double
-     *
-     * Returns value for given key interpreted as double.
-     *
-     * \param key key name
-     * \param defaultValue default if key does not exist
-     * \return value as double
-     */
-    double get(const std::string& key, double defaultValue) const;
-
-
     /** \brief get value converted to a certain type
      *
      * Returns value as type T for given key.