A fix for a bug with long definition of SET or ENUM.

Barkov approved it already

mysql-test/r/type_set.result

@@ -13,3 +13,5 @@ t1	CREATE TABLE `t1` (
   `a` set('','a','b') NOT NULL default 'b'
 ) TYPE=MyISAM CHARSET=latin1
 drop table t1;
+CREATE TABLE t1 (   user varchar(64) NOT NULL default '',   path varchar(255) NOT NULL default '',   privilege   set('select','RESERVED30','RESERVED29','RESERVED28','RESERVED27','RESERVED26',   'RESERVED25','RESERVED24','data.delete','RESERVED22','RESERVED21',   'RESERVED20','data.insert.none','data.insert.approve',   'data.insert.delete','data.insert.move','data.insert.propose',   'data.insert.reject','RESERVED13','RESERVED12','RESERVED11','RESERVED10',   'RESERVED09','data.update','RESERVED07','RESERVED06','RESERVED05',   'RESERVED04','metadata.delete','metadata.put','RESERVED01','RESERVED00')   NOT NULL default '',   KEY user (user)   ) TYPE=MyISAM CHARSET=utf8;
+DROP TABLE t1;

mysql-test/t/type_set.test

@@ -12,3 +12,5 @@ drop table t1;
 create table t1 (a set (' ','a','b ') not null default 'b ');
 show create table t1;
 drop table t1;
+CREATE TABLE t1 (   user varchar(64) NOT NULL default '',   path varchar(255) NOT NULL default '',   privilege   set('select','RESERVED30','RESERVED29','RESERVED28','RESERVED27','RESERVED26',   'RESERVED25','RESERVED24','data.delete','RESERVED22','RESERVED21',   'RESERVED20','data.insert.none','data.insert.approve',   'data.insert.delete','data.insert.move','data.insert.propose',   'data.insert.reject','RESERVED13','RESERVED12','RESERVED11','RESERVED10',   'RESERVED09','data.update','RESERVED07','RESERVED06','RESERVED05',   'RESERVED04','metadata.delete','metadata.put','RESERVED01','RESERVED00')   NOT NULL default '',   KEY user (user)   ) TYPE=MyISAM CHARSET=utf8;
+DROP TABLE t1;

sql/sql_parse.cc

@@ -3967,9 +3967,10 @@ bool add_field_to_list(THD *thd, char *field_name, enum_field_types type,
     }
   }
 
-  if (new_field->length > MAX_FIELD_CHARLENGTH ||
+  if ((new_field->length > MAX_FIELD_CHARLENGTH && type != FIELD_TYPE_SET && 
+       type != FIELD_TYPE_ENUM) ||
       (!new_field->length && !(new_field->flags & BLOB_FLAG) &&
-       type != FIELD_TYPE_STRING && 
+       type != FIELD_TYPE_STRING &&
        type != FIELD_TYPE_VAR_STRING && type != FIELD_TYPE_GEOMETRY))
   {
     net_printf(thd,ER_TOO_BIG_FIELDLENGTH,field_name,