Update configuration for new working draft N4567, and build new papers

N4566 (editor's report) and N4567 (new working draft).

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.

[thread.lock.shared.cons] Formatting fix.

Add document number N3337 for 2012 pre-Spring mailing.