Fix Win32 breakage - these hook providers can't be _DECLARE()ed,
  they -would- be _DECLARE_NONSTD ... except that no functions within
  mod_ldap need to be exported at all.  All functions can be static,
  as they are registered via callbacks.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@160498 13f79535-47bb-0310-9956-ffa450edef68