Added missing cleanup in sp-security.test.

(Also put the hostpart back in the definer column.)

make characteristics (and SHOW) work right, we had to separate the old
definition blob in the mysql.proc table into separate fields for parameters,
return type, and body, and handle the characteristics (like SQL SECURITY)
separately... and then reassemble the CREATE string for parsing, of course.
This is rather ugly, mostly the parser bit. (Hopefully that will be better
with the new parser.)

sql_mode is stored and used with SPs.
sql_select_limit is always unlimited in SPs.

Also made the parsing and handling of SP characteristics
more general and extendable, and added a few ch:istics.

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b1994

into eagle.mysql.r18.ru:/home/vva/work/BUG_1688/mysql-4.1

into mysql.com:/my/mysql-4.1

 - postinstall of the Mac OS X PKG failed as a parameter for 
   mysql_install_db was changed for MySQL 4.1
 - postinstall of the Server RPM failed as mysql_create_system_tables was
   missing from the file list

Syntax for TIMESTAMPADD:

TIMESTAMPADD(interval, integer_expression, datetime_expression)

interval:= FRAC_SECOND | SECOND | MINUTE | HOUR | DAY | WEEK | MONTH | 
QUARTER | YEAR

Supported SQL_TSI_  prefix  (like SQL_TSI_SECOND)

Syntax for TIMESTAMPDIFF:

TIMESTAMPDIFF(interval, datetime_expression1, datetime_expression2)

interval:= FRAC_SECOND | SECOND | MINUTE | HOUR | DAY | WEEK | MONTH | 
QUARTER | YEAR

Supported SQL_TSI_  prefix  (like SQL_TSI_SECOND)

into mysql.com:/home/kostja/mysql/mysql-4.1-root

into mysql.com:/my/mysql-4.1

to mysqld that is executed for all new connections.
(Similar to the client command: mysql_options(... MYSQL_INIT_COMMAND ...).

QUERY_NO_GOOD_INDEX_USED and QUERY_NO_INDEX_USED moved from thd->lex.select_lex->options to thd->server_status

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

(isn't it obvious ?)

table definition crashed), and recursive calls.

into mysql.com:/home/kostja/mysql/mysql-4.1-max_prep_stmt_count

into serg.mylan:/usr/home/serg/Abk/mysql-4.1