* The default constructor and reset() will not throw; default-constructed
shared_ptr (and weak_ptr) instances will have an unspecified use_count().

* shared_*_cast will be renamed to sp_*_cast.

* use_count_is_zero will be renamed to bad_weak_ptr.

* operator< will no longer compare pointer values. Two shared_ptr's will be
equivalent WRT operator< (i.e. !(p < q) && !(q < p)) when they share
ownership.

* boost::counted_base will go back to detail::, and the intrusive option
will be removed. A new class template boost::enable_shared_from_this<>  will
provide shared_from_this() methods to classes that derive from it. [*]

* shared_ptr_test.cpp will now have much better coverage.

--
Peter Dimov
http://www.pdimov.com

[*] I've successfully converted my projects to use the new feature.

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