[boost] [type_traits][docs] example for is_base_of<> needs to be updated

From: Pavel Kalugin (p.kalugin_at_[hidden])
Date: 2006-12-10 14:01:01

documentation for is_base_of says:
"... Note that is_base_of<X,X> will always inherit from true_type..."

and few lines after:
"is_base_of<Base, Base>::value is an integral constant expression that 
evaluates to false: a class is not it's own base.",

http://boost.org/doc/html/boost_typetraits/reference.html#boost_typetraits.is_base_of

--
Pavel Kalugin