Provide names for template and function parameters in forward declarations.  The purpose is to aid automated documentation tools.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@133008 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/forward_list b/include/forward_list
index aae3317..a3810f0 100644
--- a/include/forward_list
+++ b/include/forward_list
@@ -178,7 +178,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-template <class, class> struct __forward_list_node;
+template <class _Tp, class _VoidPtr> struct __forward_list_node;
 
 template <class _NodePtr>
 struct __forward_begin_node
@@ -208,8 +208,8 @@
     value_type __value_;
 };
 
-template<class, class> class forward_list;
-template<class> class __forward_list_const_iterator;
+template<class _Tp, class _Alloc> class forward_list;
+template<class _NodeConstPtr> class __forward_list_const_iterator;
 
 template <class _NodePtr>
 class _LIBCPP_VISIBLE __forward_list_iterator