book_access 6.x-1.0-rc6

Changes since DRUPAL-6--1-0-RC5:

• #375948 by Neodym, kiamlaluno: Removal of "Add Child Page" link and "Outline" tab if update permission is not granted on the book.
• By kiamlaluno: Fixed some issues from the previously committed code.
• By kiamlaluno: Changed the code as per #680832, #678798, and #370448.
• By kiamlaluno: Updated the implementation of hook_node_access_explain(), and changed the explanation strings.
• #685058 by deviantintegral: Outline tab is shown for anonymous users on non-book pages.
• By kiamlaluno: Corrected a path being referred in hook_help().
• By kiamlaluno: Rearranged the code, and removed the CSS file.
• By kiamlaluno: Corrected a typo in the definition of the database schema, and changed it to make it match the definition of the table {node_access}.
• #639334 by kiamlaluno: Re-arrange, and change the help text.
• By kiamlaluno: Fixed the access to a not defined variable.
• #682948 by kiamlaluno: Members losing access sporadically.
• #721720 by kbsymanz: Add child page link removed when it should not be.
• #396838 by kiam: Add an option for the node access default values.