* Merge from debian unstable, remaining 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) - env.c: Add "http_proxy" to initial_keepenv_table, so that it is kept for "sudo apt-get ...". (Ubuntu specific EBW hack, should disappear at some point) - debian/{rules,postinst,sudo-ldap.postinst}: Disable init script installation. Debian reintroduced it because /var/run tmpfs is not the default there, but has been on Ubuntu for ages.