Merge mysql.com:/usr/home/bar/mysql-4.1.b9948

into  mysql.com:/usr/home/bar/mysql-5.0

sql/mysql_priv.h

@@ -1147,6 +1147,7 @@ extern bool opt_using_transactions, mysqld_embedded;
 extern bool using_update_log, opt_large_files, server_id_supplied;
 extern bool opt_log, opt_update_log, opt_bin_log, opt_slow_log, opt_error_log;
 extern bool opt_disable_networking, opt_skip_show_db;
+extern bool opt_character_set_client_handshake;
 extern bool volatile abort_loop, shutdown_in_progress, grant_option;
 extern bool mysql_proc_table_exists;
 extern uint volatile thread_count, thread_running, global_read_lock;

sql/mysqld.cc

@@ -338,6 +338,8 @@ static my_bool opt_sync_bdb_logs;
 bool opt_log, opt_update_log, opt_bin_log, opt_slow_log;
 bool opt_error_log= IF_WIN(1,0);
 bool opt_disable_networking=0, opt_skip_show_db=0;
+bool opt_character_set_client_handshake= 1;
+bool lower_case_table_names_used= 0;
 bool server_id_supplied = 0;
 bool opt_endinfo,using_udf_functions, locked_in_memory;
 bool opt_using_transactions, using_update_log;
@@ -4410,6 +4412,7 @@ enum options_mysqld
   OPT_EXPIRE_LOGS_DAYS,
   OPT_GROUP_CONCAT_MAX_LEN,
   OPT_DEFAULT_COLLATION,
+  OPT_CHARACTER_SET_CLIENT_HANDSHAKE,
   OPT_INIT_CONNECT,
   OPT_INIT_SLAVE,
   OPT_SECURE_AUTH,
@@ -4511,6 +4514,11 @@ Disable with --skip-bdb (will save memory).",
    0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"bootstrap", OPT_BOOTSTRAP, "Used by mysql installation scripts.", 0, 0, 0,
    GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
+  {"character-set-client-handshake", OPT_CHARACTER_SET_CLIENT_HANDSHAKE,
+   "Don't use client side character set value sent during handshake.",
+   (gptr*) &opt_character_set_client_handshake,
+   (gptr*) &opt_character_set_client_handshake,
+    0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
   {"character-set-server", 'C', "Set the default character set.",
    (gptr*) &default_character_set_name, (gptr*) &default_character_set_name,
    0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },

sql/sql_parse.cc

@@ -875,11 +875,13 @@ static int check_connection(THD *thd)
     DBUG_PRINT("info", ("client_character_set: %d", (uint) net->read_pos[8]));
     /*
       Use server character set and collation if
+      - opt_character_set_client_handshake is not set
       - client has not specified a character set
       - client character set is the same as the servers
       - client character set doesn't exists in server
     */
-    if (!(thd->variables.character_set_client=
+    if (!opt_character_set_client_handshake ||
+        !(thd->variables.character_set_client=
 	  get_charset((uint) net->read_pos[8], MYF(0))) ||
 	!my_strcasecmp(&my_charset_latin1,
 		       global_system_variables.character_set_client->name,