[review] Fast track review of Boost.Utility/Singleton - rejected for now

Hi all,

We've gotten a lot of feedback on the Boost.Utility/Singleton. It's 
clear that such an addition would be beneficial to Boost, but I've 
chosen to reject the library at this time.

Summary:
- 4 positive reviews
- 4 negative reviews

Phil Endecott - yes
Nat Goodspeed - yes
Dherring[@]ll[]mit[]edu - yes
Ingolf Steinbach - yes
Anthony Williams - no
Gennady - no
Pierre-Jules Tremblay - no
Michael Marcin - no

The main concern was that the library is not flexible enough, and that 
it imposes too many things on the users (like, if BOOST_HAS_THREADS is 
defined, the singleton is automatically thread-safe).

I would like to see this into Boost, so I hope Tobias will update the 
library, given all this feedback, and I would suggest another review in 
2-3 months. I'd like to be the review manager then as well, if Tobias 
will still want me.

Suggestions:
* Should use policies to specify creation/destruction, access to 
singleton, resurection
  For creation/destruction, one should be able to have
  singleton<single_thread<T> >, singleton< synchronized<T> >, singleton< 
thread_specific<T> >
* example for DLL support
* more detailed docs

As for the next review of the library, I will talk to Tobias, and let 
the review wizard know.
Thanks to Tobias, for the lib, and to all that participated to the review!

Best,
John
- Review Manager -

--

-- 
http://John.Torjo.com -- C++ expert
... call me only if you want things done right

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