[boost] [context review] Review is finished

Hi all, As there were no request to extend the review, the review of Oliver Kowalke Context library is finished. I think that even if there were not too much review and discussions, there were enough material to make Boost.Context a library having the Boost level. I hope I could be able to give the review result soon. I would like to thank Oliver and of course all the reviewers for their participation I'm afraid there was some problems with User ML. If you think that you could made a review next weekend, please don't hesitate to send it to the Dev ML. Vicente, Review manager