Try a workaround to have MrDocs document the specialization of std::hash

Author: gennaroprota

include/boost/dynamic_bitset/dynamic_bitset.hpp

@@ -30,17 +30,15 @@
 
 #if defined( BOOST_DYNAMIC_BITSET_SPECIALIZE_STD_HASH )
 #    include <functional>
-namespace std {
 
 //!     Support for std::hash.
 //!
 //!     You can exclude this support by defining the macro
 //!     `BOOST_DYNAMIC_BITSET_NO_STD_HASH`.
 // -----------------------------------------------------------------------
 template< typename Block, typename AllocatorOrContainer >
-struct hash< boost::dynamic_bitset< Block, AllocatorOrContainer > >;
+struct std::hash< boost::dynamic_bitset< Block, AllocatorOrContainer > >;
 
-}
 #endif
 
 namespace boost {

include/boost/dynamic_bitset/impl/dynamic_bitset.ipp

@@ -2224,10 +2224,9 @@ dynamic_bitset< Block, AllocatorOrContainer >::bit_appender::get_count() const
 
 // std::hash support
 #if defined( BOOST_DYNAMIC_BITSET_SPECIALIZE_STD_HASH )
-namespace std {
 
 template< typename Block, typename AllocatorOrContainer >
-struct hash< boost::dynamic_bitset< Block, AllocatorOrContainer > >
+struct std::hash< boost::dynamic_bitset< Block, AllocatorOrContainer > >
 {
     typedef boost::dynamic_bitset< Block, AllocatorOrContainer > argument_type;
     typedef std::size_t                               result_type;
@@ -2239,5 +2238,4 @@ struct hash< boost::dynamic_bitset< Block, AllocatorOrContainer > >
     }
 };
 
-}
 #endif