Correct the comment about the ibuf record format in >= 4.1.1

The problem was that memory was free'd, but it was referenced
later. This free was unneccessary anyway, because join_free() /
JOIN::cleanup takes care of this later on.

Added test case into t/subselect.test for it.

Regards,
Jani

dump when result was NULL.

We signed error instead of returning the result

mysql->server_status wasn't set after the query

into deer.(none):/home/hf/work/mysql-4.1.1224

code slightly modified with Monty's suggestions

into mysql.com:/home/mysql_src/mysql-4.1

into gluh.mysql.r18.ru:/home/gluh/Bugs/mysql-4.1.long

when DROP USER if --skip-grant-tables

from command line did not work.

into sinisa.nasamreza.org:/mnt/work/mysql-4.1

  Fixed a typo bug.

into rurik.mysql.com:/home/igor/mysql-4.1

WL#1163 (Make spatial code separable)
fixes before the push

starting character elsewhere than in the beginning of a line,
because it affected some innodb options that had ';'
in them.

wl #1163 (Make spatial code optional)
Patch I cleaned with Serg & Monty's suggestions

into sinisa.nasamreza.org:/mnt/work/mysql-4.1

CONVERT(expr, expr, expr);

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

into sinisa.nasamreza.org:/mnt/work/mysql-4.1

into rurik.mysql.com:/home/igor/mysql-4.1

into bar.intranet.mysql.r18.ru:/usr/home/bar/mysql-4.1

into deer.(none):/home/hf/work/mysql-4.1.clean

  Rewrote to comply the coding style

Actually no PS-related methods were exported.
Now they're in the libmysqld.def