Added indirect_reference_t alias.

Author: Lastique

include/boost/indirect_reference.hpp

@@ -1,5 +1,5 @@
-#ifndef INDIRECT_REFERENCE_DWA200415_HPP
-#define INDIRECT_REFERENCE_DWA200415_HPP
+#ifndef BOOST_INDIRECT_REFERENCE_DWA200415_HPP
+#define BOOST_INDIRECT_REFERENCE_DWA200415_HPP
 
 //
 // Copyright David Abrahams 2004. Use, modification and distribution is
@@ -11,33 +11,36 @@
 // http://www.boost.org/libs/iterator/doc/pointee.html
 //
 
+#include <type_traits>
+
 #include <boost/detail/is_incrementable.hpp>
 #include <boost/iterator/iterator_traits.hpp>
 #include <boost/pointee.hpp>
 
-#include <type_traits>
-
 namespace boost {
 namespace detail {
 
 template< typename P >
 struct smart_ptr_reference
 {
-    using type = typename boost::pointee<P>::type&;
+    using type = boost::pointee_t< P >&;
 };
 
 } // namespace detail
 
 template< typename P >
 struct indirect_reference :
     std::conditional<
-        detail::is_incrementable<P>::value,
-        iterator_reference<P>,
-        detail::smart_ptr_reference<P>
+        detail::is_incrementable< P >::value,
+        iterator_reference< P >,
+        detail::smart_ptr_reference< P >
     >::type
 {
 };
 
+template< typename P >
+using indirect_reference_t = typename indirect_reference< P >::type;
+
 } // namespace boost
 
-#endif // INDIRECT_REFERENCE_DWA200415_HPP
+#endif // BOOST_INDIRECT_REFERENCE_DWA200415_HPP