[ruby] For swig::from, use template specialization to convert shared_ptr<const T> to shared_ptr<T>.

Examples/test-suite/cpp11_shared_ptr_const.i

@@ -0,0 +1,47 @@
+%module cpp11_shared_ptr_const
+
+%{
+
+#include <memory>
+#include <vector>
+
+class Foo
+{
+public:
+  Foo(int i) : m(i) {}
+  int get_m() { return m;}
+  int m;
+};
+
+std::vector<std::shared_ptr<Foo> > foo_vec() {
+    std::vector<std::shared_ptr<Foo> > result;
+    result.push_back( std::shared_ptr<Foo>(new Foo(7)) );
+    return result;
+}
+
+std::vector<std::shared_ptr<const Foo> > const_foo_vec() {
+  std::vector<std::shared_ptr<const Foo> > result;
+  result.push_back( std::shared_ptr<Foo>(new Foo(7)) );
+  return result;
+}
+
+%}
+
+%include <std_shared_ptr.i>
+%include <std_vector.i>
+
+%shared_ptr(Foo);
+
+%template (FooVector) std::vector<std::shared_ptr<Foo> >;
+%template (FooConstVector) std::vector<std::shared_ptr<Foo const> >;
+
+std::vector<std::shared_ptr<Foo> > foo_vec() const;
+std::vector<std::shared_ptr<const Foo> > const_foo_vec() const;
+
+class Foo
+{
+public:
+  Foo(int i);
+  int get_m();
+  int m;
+};