[boost] [pool] variadically templated object_pool.construct()

I would like to request to bring object_pool.hpp up-to-date (all the way to 2011) and include a member function with this signature: template element_type * construct( Args && ... args_ ); degski -- "*Ihre sogenannte Religion wirkt bloß wie ein Opiat reizend, betäubend, Schmerzen aus Schwäche stillend.*" - Novalis 1798