libstdc++: Fix doxygen markup for group close commands

A change in Doxygen 1.8.16 means that "// @}" is no longer recognized by
Doxygen, so doesn't close a @{ group. A "///" comment needs to be used.

libstdc++-v3/ChangeLog:

	* include/bits/atomic_base.h: Fix doxygen group close.
	* include/bits/basic_ios.h: Likewise.
	* include/bits/forward_list.h: Likewise.
	* include/bits/fs_dir.h: Likewise.
	* include/bits/fs_ops.h: Likewise.
	* include/bits/fs_path.h: Likewise.
	* include/bits/functional_hash.h: Likewise.
	* include/bits/gslice.h: Likewise.
	* include/bits/gslice_array.h: Likewise.
	* include/bits/hashtable_policy.h: Likewise.
	* include/bits/indirect_array.h: Likewise.
	* include/bits/locale_classes.h: Likewise.
	* include/bits/locale_facets.h: Likewise.
	* include/bits/locale_facets_nonio.h: Likewise.
	* include/bits/mask_array.h: Likewise.
	* include/bits/refwrap.h: Likewise.
	* include/bits/regex.h: Likewise.
	* include/bits/regex_automaton.h: Likewise.
	* include/bits/regex_compiler.h: Likewise.
	* include/bits/regex_constants.h: Likewise.
	* include/bits/regex_error.h: Likewise.
	* include/bits/regex_executor.h: Likewise.
	* include/bits/regex_scanner.h: Likewise.
	* include/bits/shared_ptr.h: Likewise.
	* include/bits/shared_ptr_atomic.h: Likewise.
	* include/bits/shared_ptr_base.h: Likewise.
	* include/bits/slice_array.h: Likewise.
	* include/bits/specfun.h: Likewise.
	* include/bits/std_function.h: Likewise.
	* include/bits/std_mutex.h: Likewise.
	* include/bits/stl_deque.h: Likewise.
	* include/bits/stl_iterator.h: Likewise.
	* include/bits/stl_iterator_base_types.h: Likewise.
	* include/bits/stl_map.h: Likewise.
	* include/bits/stl_multimap.h: Likewise.
	* include/bits/stl_multiset.h: Likewise.
	* include/bits/stl_numeric.h: Likewise.
	* include/bits/stl_pair.h: Likewise.
	* include/bits/stl_set.h: Likewise.
	* include/bits/stl_uninitialized.h: Likewise.
	* include/bits/stream_iterator.h: Likewise.
	* include/bits/streambuf_iterator.h: Likewise.
	* include/bits/unique_ptr.h: Likewise.
	* include/bits/unordered_map.h: Likewise.
	* include/bits/unordered_set.h: Likewise.
	* include/decimal/decimal: Likewise.
	* include/experimental/any: Likewise.
	* include/experimental/array: Likewise.
	* include/experimental/bits/fs_dir.h: Likewise.
	* include/experimental/bits/fs_fwd.h: Likewise.
	* include/experimental/bits/fs_ops.h: Likewise.
	* include/experimental/bits/fs_path.h: Likewise.
	* include/experimental/buffer: Likewise.
	* include/experimental/internet: Likewise.
	* include/experimental/optional: Likewise.
	* include/experimental/propagate_const: Likewise.
	* include/experimental/socket: Likewise.
	* include/ext/pb_ds/assoc_container.hpp: Likewise.
	* include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp:
	Likewise.
	* include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp: Likewise.
	* include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp: Likewise.
	* include/ext/pb_ds/detail/types_traits.hpp: Likewise.
	* include/ext/pb_ds/exception.hpp: Likewise.
	* include/ext/pb_ds/priority_queue.hpp: Likewise.
	* include/ext/pb_ds/tag_and_trait.hpp: Likewise.
	* include/ext/random: Likewise.
	* include/std/any: Likewise.
	* include/std/atomic: Likewise.
	* include/std/bitset: Likewise.
	* include/std/chrono: Likewise.
	* include/std/complex: Likewise.
	* include/std/condition_variable: Likewise.
	* include/std/fstream: Likewise.
	* include/std/future: Likewise.
	* include/std/iostream: Likewise.
	* include/std/istream: Likewise.
	* include/std/mutex: Likewise.
	* include/std/numeric: Likewise.
	* include/std/ostream: Likewise.
	* include/std/ratio: Likewise.
	* include/std/shared_mutex: Likewise.
	* include/std/stdexcept: Likewise.
	* include/std/streambuf: Likewise.
	* include/std/system_error: Likewise.
	* include/std/thread: Likewise.
	* include/std/valarray: Likewise.
	* include/std/variant: Likewise.
	* include/tr1/cmath: Likewise.
	* include/tr1/regex: Likewise.
	* include/tr2/dynamic_bitset: Likewise.
	* libsupc++/atomic_lockfree_defines.h: Likewise.
	* libsupc++/exception: Likewise.
	* libsupc++/exception.h: Likewise.
	* libsupc++/exception_ptr.h: Likewise.
	* libsupc++/nested_exception.h: Likewise.

libstdc++-v3/ChangeLog:

	* include/tr1/regex:

9 files changed, 22 insertions, 22 deletions

diff --git a/libstdc++-v3/include/ext/pb_ds/assoc_container.hpp b/libstdc++-v3/include/ext/pb_ds/assoc_container.hpp
index 2dbf6d3..959d624 100644
--- a/libstdc++-v3/include/ext/pb_ds/assoc_container.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/assoc_container.hpp
@@ -516,7 +516,7 @@ namespace __gnu_pbds
     swap(gp_hash_table& other)
     { base_type::swap(other); }
   };
-  //@} hash-based
+  ///@} hash-based
 #undef PB_DS_GP_HASH_BASE
 
 
@@ -780,7 +780,7 @@ namespace __gnu_pbds
     swap(trie& other)
     { base_type::swap(other); }
   };
-  //@} branch-based
+  ///@} branch-based
 #undef PB_DS_TRIE_BASE
 #undef PB_DS_TRIE_NODE_AND_IT_TRAITS
 
@@ -852,10 +852,10 @@ namespace __gnu_pbds
     swap(list_update& other)
     { base_type::swap(other); }
   };
-  //@} list-based
+  ///@} list-based
 #undef PB_DS_LU_BASE
 
-  // @} group containers-pbds
+  /// @} group containers-pbds
 } // namespace __gnu_pbds
 
 #endif
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp b/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp
index aaca457..c2f69f9 100644
--- a/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp
@@ -107,7 +107,7 @@ namespace __gnu_pbds
 	/// Dispatched type.
 	typedef thin_heap<_VTp, Cmp_Fn, _Alloc> 		type;
       };
-    //@} group pbds
+    ///@} group pbds
   } // namespace detail
 } // namespace __gnu_pbds
 
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp b/libstdc++-v3/include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp
index 289f53c..5ea9d93 100644
--- a/libstdc++-v3/include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp
@@ -96,7 +96,7 @@ namespace __gnu_pbds
     public:
       typedef typename tree_metadata_helper<__node_u, null_update>::type type;
     };
-    //@}
+    ///@}
   } // namespace detail
 } // namespace __gnu_pbds
 
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp b/libstdc++-v3/include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp
index cbde92b..34c78de 100644
--- a/libstdc++-v3/include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp
@@ -96,7 +96,7 @@ namespace __gnu_pbds
     public:
       typedef typename trie_metadata_helper<__node_u, null_update>::type type;
     };
-    //@}
+    ///@}
   } // namespace detail
 } // namespace __gnu_pbds
 
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/types_traits.hpp b/libstdc++-v3/include/ext/pb_ds/detail/types_traits.hpp
index 6f94c38..0e6b596 100644
--- a/libstdc++-v3/include/ext/pb_ds/detail/types_traits.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/detail/types_traits.hpp
@@ -191,7 +191,7 @@ namespace __gnu_pbds
 	store_extra			       	m_store_extra_indicator;
 	no_throw_indicator 		 	m_no_throw_copies_indicator;
     };
-    //@}
+    ///@}
   } // namespace detail
 } // namespace __gnu_pbds
 
diff --git a/libstdc++-v3/include/ext/pb_ds/exception.hpp b/libstdc++-v3/include/ext/pb_ds/exception.hpp
index eb61204..1ba9509 100644
--- a/libstdc++-v3/include/ext/pb_ds/exception.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/exception.hpp
@@ -87,7 +87,7 @@ namespace __gnu_pbds
   inline void
   __throw_resize_error()
   { _GLIBCXX_THROW_OR_ABORT(resize_error()); }
-  //@}
+  ///@}
 } // namespace __gnu_pbds
 
 #endif
diff --git a/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp b/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp
index dee140a..8ff1784 100644
--- a/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp
@@ -152,5 +152,5 @@ namespace __gnu_pbds
     { base_type::swap(other); }
   };
 } // namespace __gnu_pbds
- //@} heap-based
+ ///@} heap-based
 #endif
diff --git a/libstdc++-v3/include/ext/pb_ds/tag_and_trait.hpp b/libstdc++-v3/include/ext/pb_ds/tag_and_trait.hpp
index 4156302..651c9c0 100644
--- a/libstdc++-v3/include/ext/pb_ds/tag_and_trait.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/tag_and_trait.hpp
@@ -113,7 +113,7 @@ namespace __gnu_pbds
    */
   struct range_invalidation_guarantee : public point_invalidation_guarantee
   { };
-  //@}
+  ///@}
 
 
   /**
@@ -184,8 +184,8 @@ namespace __gnu_pbds
 
   /// Thin heap.
   struct thin_heap_tag : public priority_queue_tag { };
-  //@}
-  //@}
+  ///@}
+  ///@}
 
 
   /**
@@ -438,7 +438,7 @@ namespace __gnu_pbds
 	reverse_iteration = base_type::reverse_iteration
       };
   };
-  //@}
+  ///@}
 
 
   namespace detail
@@ -448,7 +448,7 @@ namespace __gnu_pbds
 	     typename Policy_Tl = null_type>
       struct container_base_dispatch;
   } // namespace detail
-  //@}
+  ///@}
 } // namespace __gnu_pbds
 
 #endif
diff --git a/libstdc++-v3/include/ext/random b/libstdc++-v3/include/ext/random
index 6404077..3fd3d9d 100644
--- a/libstdc++-v3/include/ext/random
+++ b/libstdc++-v3/include/ext/random
@@ -1043,7 +1043,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	_M_ndy(result_type(0), __p.sigma())
       { }
 
-      // @}
+      /// @}
 
       /**
        * @brief Resets the distribution state.
@@ -1295,7 +1295,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	_M_gd(__p.mu(), __p.omega() / __p.mu())
       { }
 
-      // @}
+      /// @}
 
       /**
        * @brief Resets the distribution state.
@@ -1540,7 +1540,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	_M_ud()
       { }
 
-      // @}
+      /// @}
 
       /**
        * @brief Resets the distribution state.
@@ -1801,7 +1801,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	_M_gd2(__p.nu(), __p.mu() / __p.nu())
       { }
 
-      // @}
+      /// @}
 
       /**
        * @brief Resets the distribution state.
@@ -2040,7 +2040,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	      +1.5707963267948966192313216916397514L)
       { }
 
-      // @}
+      /// @}
 
       /**
        * @brief Resets the distribution state.
@@ -3303,7 +3303,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       : _M_param(__p)
       { }
 
-      // @}
+      /// @}
 
       /**
        * @brief Resets the distribution state.
@@ -3709,7 +3709,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       : _M_param(__p), _M_uosd()
       { }
 
-      // @}
+      /// @}
 
       /**
        * @brief Resets the distribution state.