Add std::array container wrappers for Python

These work much like any of the other STL containers except Python slicing
is somewhat limited because the array is a fixed size. Only slices of
the full size are supported.

Lib/std/std_array.i

@@ -0,0 +1,88 @@
+//
+// std::array
+//
+
+%include <std_container.i>
+
+%define %std_array_methods(array...)
+  %std_sequence_methods_non_resizable(array)
+  void fill(const value_type& u);
+%enddef
+
+
+%define %std_array_methods_val(array...)
+  %std_sequence_methods_non_resizable_val(array)
+  void fill(const value_type& u);
+%enddef
+
+// ------------------------------------------------------------------------
+// std::array
+// 
+// The aim of all that follows would be to integrate std::array with 
+// as much as possible, namely, to allow the user to pass and 
+// be returned tuples or lists.
+// const declarations are used to guess the intent of the function being
+// exported; therefore, the following rationale is applied:
+// 
+//   -- f(std::array<T, N>), f(const std::array<T, N>&):
+//      the parameter being read-only, either a sequence or a
+//      previously wrapped std::array<T, N> can be passed.
+//   -- f(std::array<T, N>&), f(std::array<T, N>*):
+//      the parameter may be modified; therefore, only a wrapped std::array
+//      can be passed.
+//   -- std::array<T, N> f(), const std::array<T, N>& f():
+//      the array is returned by copy; therefore, a sequence of T:s 
+//      is returned which is most easily used in other functions
+//   -- std::array<T, N>& f(), std::array<T, N>* f():
+//      the array is returned by reference; therefore, a wrapped std::array
+//      is returned
+//   -- const std::array<T, N>* f(), f(const std::array<T, N>*):
+//      for consistency, they expect and return a plain array pointer.
+// ------------------------------------------------------------------------
+
+%{
+#include <array>
+%}
+
+// exported classes
+
+namespace std {
+
+  template<class _Tp, size_t _Nm >
+  class array {
+  public:
+    typedef size_t size_type;
+    typedef ptrdiff_t difference_type;
+    typedef _Tp value_type;
+    typedef value_type* pointer;
+    typedef const value_type* const_pointer;
+    typedef _Tp& reference;
+    typedef const _Tp& const_reference;
+
+    %traits_swigtype(_Tp);
+    %traits_enum(_Tp);
+
+    %fragment(SWIG_Traits_frag(std::array<_Tp, _Nm >), "header",
+	      fragment=SWIG_Traits_frag(_Tp),
+	      fragment="StdArrayTraits") {
+      namespace swig {
+	template <>  struct traits<std::array<_Tp, _Nm > > {
+	  typedef pointer_category category;
+	  static const char* type_name() {
+	    return "std::array<" #_Tp "," #_Nm " >";
+	  }
+	};
+      }
+    }
+
+    %typemap_traits_ptr(SWIG_TYPECHECK_STDARRAY, std::array<_Tp, _Nm >);
+
+#ifdef %swig_array_methods
+    // Add swig/language extra methods
+    %swig_array_methods(std::array<_Tp, _Nm >);
+#endif
+
+    %std_array_methods(array);
+  };
+}
+