[development] upgrade in book.module feature set for 4.8.

hello, In the patch queu, I saw nothing that would dramatically improve the feature set offered by book.module... so I created this: http://drupal.org/node/65319 Please, comment here or there. I hope you'll be as excited about this as I am :) Augustin. -- http://www.wechange.org/ Because we and the world need to change. http://www.reuniting.info/ Intimate Relationships, peace and harmony in the couple. http://www.gnosis-usa.com/ Revolutionary Psychology, White Tantrism, Dream Yoga... http://www.masquilier.org/ Condorcet, Approval alternative, better voting methods.