Stop trying to set the referral HOP limit on each connection since most SDKs don't seem

to do anything with it, and causes an error on released openldap levels.  

Also moves/remove some macros internal to mod_ldap out of the public header for a major bump.

Reported against APR in PR47501, but httpd shouldn't be asking for the option
by default.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@831542 13f79535-47bb-0310-9956-ffa450edef68