disabled if ref is built with a key from the updated table

Problem was in add_not_null_conds() optimization function.
It contains following code:
JOIN_TAB *referred_tab= not_null_item->field->table->reginfo.join_tab;
...
add_cond_and_fix(&referred_tab->select_cond, notnull);
For UPDATE described in bug report referred_tab is 0 and dereferencing it
crashes the server.

  than in previous 4.1.x

Wrongly applied optimization were adding NOT NULL constraint which results in
rejecting valid rows and reduced result set.

The problem was that add_notnull_conds() while checking subquery were adding
NOT NULL constraint to left joined table, to which, normally, optimization 
don't have to be applied.

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1-new

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1-new

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1-release

      + added close of some fd's
      + debug prints

In 4.1 the connection to the management server _must_ stay, that is how we
ensure that the nodeids are reserved correctly

 BUG#11596 (partial fix), IP addresses not shown in ndb_mgm SHOW command on second ndb_mgmd (or on ndb_mgmd restart)

  mysql user account to that group in the server postinstall section of the RPM spec
  file

- create a "mysql" user group and assign the mysql user account to that group
  in the server postinstall section. (BUG 10984)
- backported some changes from the 4.1 RPM spec file (cleanups: removed the incomplete
  Brazilian translations, more consequent use of macros)

Fix handling of floats and doubles when using prepared statements             
API in the embedded server. 

into  mysql.com:/opt/local/work/mysql-4.1-root

 syntax in binlog which stops replication":
disallow the use of parameter markers which can lead to generation
of malformed binlog queries. 

into mysql.com:/space/my/mysql-4.1.13-clone

    added using ndb_end and showing mem allocation stat at exit
    added init of variable
    added destruction of LocalConfig to still memleak
    added delete of theFacade on exit
    stopSessions(true) on socket server to ensure destuction of threads
    added destruction of arbit manager thread
    added true option to stopSessions in transporter facade to ensure destructions of threads

    + added close of some fd's
    + debug prints

into  linux.site:/home/reggie/bk/mysql-4.1

information about error".

    added __LINE__ so systemErrorLab for better error printout

into  mysql.com:/opt/local/work/mysql-4.1-root

into mysql.com:/home/psergey/mysql-4.1-merge-from-build

  include InnoDB)

  source table present (this happens for ORDER BY after UNION)

  This is needed because in some cases range optimization is performed twice and added 
  NOT NULL item must have correct const_table_map() value. 

into  mysql.com:/opt/local/work/mysql-4.1-root

No separate typecode for MEDIUMTEXT/LONGTEXT is added, as we
have no sound decision yet what typecodes and for what types are
sent by the server (aka what constitutes a distinct type in MySQL).

into  mysql.com:/usr/home/bar/mysql-4.1.num-conv

character set is UCS2".
The bug is no longer repeatable.

binary).

into  mysql.com:/opt/local/work/mysql-4.1-11458

into  mysql.com:/opt/local/work/mysql-4.1-11458

data": remove the fix for another bug (8807) that
added OUTER_REF_TABLE_BIT to all subqueries that used a placeholder
to prevent their evaluation at prepare. As this bit hanged in 
Item_subselect::used_tables_cache for ever, a constant subquery with
a placeholder was never evaluated as such, which caused wrong 
choice of the execution plan for the statement.
- to fix Bug#8807 backport a better fix from 5.0
- post-review fixes.

end of the test, causing subsequent tests to fail.