require_privs() can be called without any arguments.

If no $res is provided, the script is terminated with the
restricted are error.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5208 2fea6a4d-a838-0410-917b-93a53c48e9d2
Localize the restricted area's page title.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5209 2fea6a4d-a838-0410-917b-93a53c48e9d2
Use an array for tag attributes.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5210 2fea6a4d-a838-0410-917b-93a53c48e9d2