Update configuration for building N4527.
Add papers N4431 (new working draft for pre-Lenexa meeting) and N4432… … (the corresponding editor's report).
Added papers N4296 (new working draft with post-Urbana motions) and N4297 (editor's report for same).
Update configuration for building N4140.
Update document stage code too.
[tuple.general] Move tuple_element_t definition after last specializa… …tion of tuple_element.
[thread.lock.shared.cons] Formatting fix.
Add document number N3337 for 2012 pre-Spring mailing.