[std-interval] separate bool_set proposal available

[Sylvain Pion]

Dear all,

We have worked on separating the bool_set type (previously named
interval<bool>) into its own proposal.  Let me remind you that
this is used as the return type for the comparisons of intervals,
and it implements multi-valued logic (akeen to Boost.Tribool).

It is going to be document number N2046 in the mid-term mailing.
The PDF is available at :
http://www-sop.inria.fr/geometrica/team/Sylvain.Pion/cxx/bool_set/bool_set_N2046.pdf

Some sample code can also be found here :
http://www-sop.inria.fr/geometrica/team/Sylvain.Pion/cxx/


We plan to release an updated interval proposal at some point
(as soon as possible...).  And we are currently reading through
the cset documents.

-- 
Herve, Guillaume, Sylvain