"Negative integer keys incorrectly substituted for 0 during range analysis."

The problem is that the range optimizer incorrectly replaces any negative
constant with '0' for all types except BIGINT because the method save_in_field()
casts negative integers to non-negative. This causes incorrect query
results where (0 = any_negative_number).

The problem caused by this bug is fixed by the patch for BUG#11185.
That patch constitutes an optimization due to which the problem code is
never called with negative constants. This patch adds a test so we are sure
that the problem does not reappear.

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into moonbone.local:/work/mysql-4.1-bug-11868

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.

into  mysql.com:/home/jimw/my/mysql-4.1-clean

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

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into  linux.site:/home/reggie/bk/bug7403

 of system vars at PREPARE time": implement a special Item
to handle system variables. This item substitutes itself with 
a basic constant containing variable value at fix_fields.

  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  mysql.com:/home/jimw/my/mysql-4.1-clean

into  linux.site:/home/reggie/bk/bug7403

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)