S original <http://statwww.epfl.ch/davison/BMA/library.html>
by Angelo Canty <cantya@mcmaster.ca>.
R port by  Brian Ripley <ripley@stats.ox.ac.uk>.
functions and datasets for bootstrapping from the
book "Bootstrap Methods and Their Applications" by A. C. Davison and
D. V. Hinkley (1997, CUP).