* mod_ldap: Pre-scan the requirements array before doing any LDAP lookups,

   for cases where an LDAP URL is configured but non-LDAP authn/authz is in 
   effect. This stops us from trying to resolve file-based userids to a DN
   when the AuthLDAPURL has been defined at a very high level.
   PR 45946
   Trunk patch: n/a due to authz refactoring (no provider called without require-ments)
   2.2.x version of patch: http://people.apache.org/~covener/httpd-2.2.x-authnz_ldap-skipdnloookup-3.diff
   +1: covener, minfrin, jim




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@817064 13f79535-47bb-0310-9956-ffa450edef68