cleaning up the mod_auth_openid stuff

Several things here:

## I broke up the `make` from the `make install`
This allows you the recipe to differentiate between being uncompile and being installed. I also picked a random sentinel file deep in the source tree to test against. I only picked it because it was listed as the last file untarred.

## deleting of the authdb file
This isn't even needed. mod_auth_openid will create the file as needed the first time you request a page that is protected. Instead we just create the directory.

## use of `not_if` guards
See http://tickets.opscode.com/browse/CHEF-4326 . Looks like `creates` isn't enough of a guard for now