Fix std::map<> typemap

Use simple fixed typemap instead of trying to use the much more complex
one from the UTL which doesn't work for C.

Add a simple test case for std::map<>.

Lib/c/std_map.i

@@ -1 +1,61 @@
-%include <std/std_map.i>
+/* -----------------------------------------------------------------------------
+ * std_map.i
+ *
+ * SWIG typemaps for std::map
+ * ----------------------------------------------------------------------------- */
+
+%include <std_common.i>
+
+// ------------------------------------------------------------------------
+// std::map
+// ------------------------------------------------------------------------
+
+%{
+#include <map>
+#include <stdexcept>
+%}
+
+namespace std {
+  template<class K, class T, class C = std::less<K> > class map {
+    public:
+      typedef size_t size_type;
+      typedef ptrdiff_t difference_type;
+      typedef K key_type;
+      typedef T mapped_type;
+      typedef std::pair< const K, T > value_type;
+      typedef value_type* pointer;
+      typedef const value_type* const_pointer;
+      typedef value_type& reference;
+      typedef const value_type& const_reference;
+
+      map();
+      map(const map& other);
+
+      size_t size() const;
+      bool empty() const;
+      void clear();
+      %extend {
+        const T& get(const K& key) throw (std::out_of_range) {
+          std::map< K, T, C >::iterator i = self->find(key);
+          if (i != self->end())
+            return i->second;
+          else
+            throw std::out_of_range("key not found");
+        }
+        void set(const K& key, const T& x) {
+          (*self)[key] = x;
+        }
+        void del(const K& key) throw (std::out_of_range) {
+          std::map< K, T, C >::iterator i = self->find(key);
+          if (i != self->end())
+            self->erase(i);
+          else
+            throw std::out_of_range("key not found");
+        }
+        bool has_key(const K& key) {
+          std::map< K, T, C >::iterator i = self->find(key);
+          return i != self->end();
+        }
+      }
+  };
+}