There is still some stuff I'd like to do here, but I'll commit what

I have for the moment.  I've done three things:
1. Emphasize that auth does not need to be in .htaccess.
2. Add detailed discussion of each of the auth directives (does this
belong here?)
3. Remove the AuthGroupFile /dev/null which shouldn't be necessary.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91088 13f79535-47bb-0310-9956-ffa450edef68