Don't initialize fulltext functions twice in multi-table-update

mysql-test/mysql-test-run.sh:
  Added option --extern (from 4.1)
mysql-test/r/multi_update.result:
  Portability fix
mysql-test/t/multi_update.test:
  Portability fix

mysql-test/mysql-test-run.sh

@@ -217,6 +217,7 @@ while test $# -gt 0; do
     --slave-binary=*)
       SLAVE_MYSQLD=`$ECHO "$1" | $SED -e "s;--slave-binary=;;"` ;;
     --local)   USE_RUNNING_SERVER="" ;;
+    --extern)   USE_RUNNING_SERVER="1" ;;
     --tmpdir=*) MYSQL_TMP_DIR=`$ECHO "$1" | $SED -e "s;--tmpdir=;;"` ;;
     --local-master)
       MASTER_MYPORT=3306;

mysql-test/r/multi_update.result

@@ -182,13 +182,13 @@ insert into t1 values(1,1,NULL);
 insert into t2 values(1,10,NULL),(2,20,NULL);
 set timestamp=1038000000;
 UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
-select * from t1;
-n	d	t
-1	10	20021123002000
-select * from t2;
-n	d	t
-1	10	20021127154957
-2	20	20021127154957
+select n,d,unix_timestamp(t) from t1;
+n	d	unix_timestamp(t)
+1	10	1038000000
+select n,d,unix_timestamp(t) from t2;
+n	d	unix_timestamp(t)
+1	10	1038401397
+2	20	1038401397
 UPDATE t1,t2 SET 1=2 WHERE t1.n=t2.n;
 You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near '1=2 WHERE t1.n=t2.n' at line 1
 drop table t1,t2;

mysql-test/t/multi_update.test

@@ -183,8 +183,8 @@ insert into t1 values(1,1,NULL);
 insert into t2 values(1,10,NULL),(2,20,NULL);
 set timestamp=1038000000;
 UPDATE t1,t2 SET t1.d=t2.d WHERE t1.n=t2.n;
-select * from t1;
-select * from t2;
+select n,d,unix_timestamp(t) from t1;
+select n,d,unix_timestamp(t) from t2;
 --error 1064
 UPDATE t1,t2 SET 1=2 WHERE t1.n=t2.n;
 drop table t1,t2;

sql/sql_update.cc

@@ -517,7 +517,6 @@ int multi_update::prepare(List<Item> &not_used_values)
   for (i=0 ; i < table_count ; i++)
     set_if_bigger(max_fields, fields_for_table[i]->elements);
   copy_field= new Copy_field[max_fields];
-  init_ftfuncs(thd,1);
   DBUG_RETURN(thd->fatal_error != 0);
 }