Merge bk@192.168.21.1:mysql-5.1-opt

into  mysql.com:/home/hf/work/29247/my51-29247

sql-common/client.c

@@ -2459,6 +2459,7 @@ my_bool mysql_reconnect(MYSQL *mysql)
   }
   mysql_init(&tmp_mysql);
   tmp_mysql.options= mysql->options;
+  tmp_mysql.options.my_cnf_file= tmp_mysql.options.my_cnf_group= 0;
   tmp_mysql.rpl_pivot= mysql->rpl_pivot;
   
   if (!mysql_real_connect(&tmp_mysql,mysql->host,mysql->user,mysql->passwd,

sql/handler.h

@@ -1130,10 +1130,12 @@ public:
 
   int ha_index_init(uint idx, bool sorted)
   {
+    int result;
     DBUG_ENTER("ha_index_init");
     DBUG_ASSERT(inited==NONE);
+    if (!(result= index_init(idx, sorted)))
       inited=INDEX;
-    DBUG_RETURN(index_init(idx, sorted));
+    DBUG_RETURN(result);
   }
   int ha_index_end()
   {
@@ -1144,10 +1146,11 @@ public:
   }
   int ha_rnd_init(bool scan)
   {
+    int result;
     DBUG_ENTER("ha_rnd_init");
     DBUG_ASSERT(inited==NONE || (inited==RND && scan));
-    inited=RND;
-    DBUG_RETURN(rnd_init(scan));
+    inited= (result= rnd_init(scan)) ? NONE: RND;
+    DBUG_RETURN(result);
   }
   int ha_rnd_end()
   {