Add backend_check_referrals() framework.

servers/slapd/back-dnssrv/init.c

@@ -65,6 +65,7 @@ dnssrv_back_initialize(
 	bi->bi_extended = 0;
 
 	bi->bi_acl_group = 0;
+	bi->bi_chk_referrals = 0;
 
 #ifdef HAVE_CYRUS_SASL
 	bi->bi_sasl_authorize = 0;

servers/slapd/back-ldap/init.c

@@ -75,6 +75,7 @@ ldap_back_initialize(
 	bi->bi_extended = 0;
 
 	bi->bi_acl_group = ldap_back_group;
+	bi->bi_chk_referrals = 0;
 
 #ifdef HAVE_CYRUS_SASL
 	bi->bi_sasl_authorize = 0;

servers/slapd/back-ldbm/init.c

@@ -67,6 +67,7 @@ ldbm_back_initialize(
 
 	bi->bi_entry_release_rw = ldbm_back_entry_release_rw;
 	bi->bi_acl_group = ldbm_back_group;
+	bi->bi_chk_referrals = 0;
 
 	/*
 	 * hooks for slap tools

servers/slapd/back-passwd/init.c

@@ -54,6 +54,7 @@ passwd_back_initialize(
 	bi->bi_extended = 0;
 
 	bi->bi_acl_group = 0;
+	bi->bi_chk_referrals = 0;
 
 #ifdef HAVE_CYRUS_SASL
 	bi->bi_sasl_authorize = 0;

servers/slapd/back-perl/init.c

@@ -97,6 +97,7 @@ perl_back_initialize(
 	bi->bi_extended = 0;
 
 	bi->bi_acl_group = 0;
+	bi->bi_chk_referrals = 0;
 
 #ifdef HAVE_CYRUS_SASL
 	bi->bi_sasl_authorize = 0;

servers/slapd/back-shell/init.c

@@ -58,6 +58,7 @@ shell_back_initialize(
 	bi->bi_extended = 0;
 
 	bi->bi_acl_group = 0;
+	bi->bi_chk_referrals = 0;
 
 #ifdef HAVE_CYRUS_SASL
 	bi->bi_sasl_authorize = 0;

servers/slapd/back-sql/init.c

@@ -66,6 +66,7 @@ int sql_back_initialize(
 	bi->bi_op_delete = backsql_delete;
 	
 	bi->bi_acl_group = 0;
+	bi->bi_chk_referrals = 0;
  
 	bi->bi_connection_init = 0;
 	bi->bi_connection_destroy = 0;

servers/slapd/back-tcl/tcl_init.c

@@ -73,6 +73,7 @@ tcl_back_initialize (
 	bi->bi_op_abandon = tcl_back_abandon;
 
 	bi->bi_acl_group = 0;
+	bi->bi_chk_referrals = 0;
 
 	bi->bi_connection_init = 0;
 	bi->bi_connection_destroy = 0;