Cleanup ENABLE_REWRITE ifdefs, put into a new ldap_back_dn_massage().
All DN attrs are massaged, whether or not ENABLE_REWRITE is defined. Use "dnAttr" rewriteContext for Add, Compare, & Modify. Fixed ldap_back_compare.
All DN attrs are massaged, whether or not ENABLE_REWRITE is defined. Use "dnAttr" rewriteContext for Add, Compare, & Modify. Fixed ldap_back_compare.