* Merge with Debian unstable. Remaining Ubuntu changes: - debian/rules: Disable lecture, enable tty_tickets by default. (Ubuntu specific) - Add debian/sudo_root.8: Explanation of root handling through sudo. Install it in debian/rules. (Ubuntu specific) - sudo.c: If the user successfully authenticated and he is in the 'admin' group, then create a stamp ~/.sudo_as_admin_successful. Our default bash profile checks for this and displays a short intro about sudo if the flag is not present. (Ubuntu specific) * The password prompt asks for the target user's password now, not the invoking one's. (LP: #148498)