Added --compatible mode to mysqldump.

client/mysqldump.c:
  Added --compatible mode to mysqldump. This mode can take the following
  values: mysql323,mysql40,postgresql,oracle,mssql,db2,sapdb,no_key_options,
  no_table_options,no_field_options.
  
  The table definition (SHOW CREATE TABLE name) will be compatible with
  the given mode.
mysql-test/r/sql_mode.result:
  Fixed a bug in sql_show.cc, which affected the result.
sql/sql_show.cc:
  Fixed a bug.

client/client_priv.h

@@ -38,4 +38,5 @@ enum options { OPT_CHARSETS_DIR=256, OPT_DEFAULT_CHARSET,
                OPT_SSL_KEY, OPT_SSL_CERT, OPT_SSL_CA, OPT_SSL_CAPATH,
                OPT_SSL_CIPHER, OPT_SHUTDOWN_TIMEOUT, OPT_LOCAL_INFILE,
                OPT_PROMPT, OPT_IGN_LINES,OPT_TRANSACTION,OPT_MYSQL_PROTOCOL,
-               OPT_SHARED_MEMORY_BASE_NAME, OPT_FRM };
+               OPT_SHARED_MEMORY_BASE_NAME, OPT_FRM, OPT_SKIP_OPTIMIZATION,
+	       OPT_COMPATIBLE };

mysql-test/r/sql_mode.result

@@ -70,7 +70,7 @@ t1	CREATE TABLE `t1` (
   `email` varchar(60) NOT NULL default '',
   PRIMARY KEY  (`a`),
   UNIQUE KEY `email` (`email`)
-) TYPE=HEAP CHARSET=latin1 ROW_FORMAT=DYNAMIC
+) TYPE=HEAP ROW_FORMAT=DYNAMIC
 set @@sql_mode="postgresql,oracle,mssql,db2,sapdb";
 show variables like 'sql_mode';
 Variable_name	Value

sql/sql_show.cc

@@ -1198,7 +1198,9 @@ store_create_info(THD *thd, TABLE *table, String *packet)
     char buff[128];
     char* p;
     
-    if (table->table_charset)
+    if (table->table_charset &&
+	!(thd->variables.sql_mode & MODE_MYSQL323) &&
+	!(thd->variables.sql_mode & MODE_MYSQL40))
     {
       packet->append(" CHARSET=");
       packet->append(table->table_charset->csname);