Import ACL/parent locking changes from devel but define

SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL to maintain current
behavior (need child write "entry" instead of parent write "children").
Fix Modrdn to use ACL.
In 1.2, this define should be removed.

servers/slapd/back-ldbm/delete.c

@@ -53,6 +53,7 @@ ldbm_back_delete(
 		goto return_results;
 	}
 
+#define SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL 1
 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 	if ( ! access_allowed( be, conn, op, e, "entry", NULL, op->o_dn,
 	    ACL_WRITE ) ) {

servers/slapd/back-ldbm/modrdn.c

@@ -38,6 +38,7 @@ ldbm_back_modrdn(
 		return( -1 );
 	}
 
+#define SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL 1
 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
 		/* check parent for "children" acl */
 	if ( ! access_allowed( be, conn, op, e, "entry", NULL,