Fixed by moving update_key_parts() down to be after write_index().

Problem described in this bug report affects MyISAM tables only.

Running mysqld --flush instructs mysqld to sync all changes to disk
after each SQL statement. It worked well for INSERT and DELETE
statements, but it did sync for UPDATE only in case if there was
index change (change of colum that has an index). If no updated column
has an index, data wasn't synced to disk.

This fix makes UPDATE statement to sync data to disk even if there is
no index change (that is only data change) and mysqld is run with
--flush option.

into  mysql.com:/users/lthalmann/bk/MERGE/mysql-4.1-merge

into  mysql.com:/users/lthalmann/bk/MERGE/mysql-4.1-merge

into  mysql.com:/Users/kent/mysql/bk/mysql-4.1

  Corrected typo

into  mysql.com:/Users/kent/mysql/bk/mysql-4.1

  Man page for mysqld command move to section 8 (bug#21220)

  Man page for "mysqld" command move to section 8 (bug#21220)

  Man page for "mysqld" command move to section 8 (bug#21220)

Too many cursors (more than 1024) could lead to memory corruption.
This affects both, stored routines and C API cursors, and the
threshold is per-server, not per-connection.  Similarly, the
corruption could happen when the server was under heavy load
(executing more than 1024 simultaneous complex queries), and this is
the reason why this bug is fixed in 4.1, which doesn't support
cursors.

The corruption was caused by a bug in the temporary tables code, when
an attempt to create a table could lead to a write beyond allocated
space.  Note, that only internal tables were affected (the tables
created internally by the server to resolve the query), not tables
created with CREATE TEMPORARY TABLE.  Another pre-condition for the
bug is TRUE value of --temp-pool startup option, which, however, is a
default.

The cause of a bug was that random memory was overwritten in
bitmap_set_next() due to out-of-bound memory access.

into  trift2.:/M41/push-4.1

into  trift2.:/M41/push-4.1

 - Send confusing output to /dev/null

into  mysql.com:/Users/kent/mysql/bk/mysql-4.1-new

  Filter out strange control characters, messes up logs

into  mysql.com:/usr/home/ram/work/4.1.b16327

into  mysql.com:/home/hf/work/mysql-4.1.19983

 - backport patch from 5.0
 - "table" can be NULL in temporary fields used for type conversion

  Added new "mysql_explain_log" man page
  Added missing install of "myisam_ftdump" man page
  Added missing install of "mysqlman" man page

into  moonbone.local:/work/tmp_merge-4.1-opt-mysql

into  moonbone.local:/work/tmp_merge-4.1-opt-mysql

Please use "ul" when merging this changeset to 5.0.

1) When initializing a boolean variable, do not use string representations '"false"' and '"true"' 
    but rather the boolean values 'false' and 'true'.
2) Add the module to the various Windows description files.

In 5.0, this is already solved, so that is a null-merge ("ul").

into  orca.ndb.mysql.com:/space_old/pekka/ndb/version/my41-1.2461

  Command "ndb_mgm" is an optional tool, and should only be in "ndb-tools" package (bug#21058)

into  mysql.com:/usr/home/ram/work/4.1.b15195

to avoid the potential security problem.
(see bug #15195: Security Breach with MERGE table)

into  rakia.(none):/home/kgeorge/mysql/autopush/B17212-4.1-opt

into  mysql.com:/home/hf/work/mysql-4.1.16017

into  mysql.com:/home/hf/work/mysql-4.1.16017

into  zippy.(none):/home/cmiller/work/mysql/m41-maint--07AB5

into  zippy.(none):/home/cmiller/work/mysql/m41-maint--07AB5

into  anubis.greendragongames.com:/home/greenman/workspace-mysql/mysql/pending/bug-4.1-15977

do not look for client-specific commands while inside a multi-line comment.
we will allow multi-comments pretty much anywhere within SQL-statements,
but client-specific commands (help, use, print, ...) must be the first token
in the input.

into  dl145k.mysql.com:/data0/mkindahl/bk/mysql-4.1-rpl

  * don't use join cache when the incoming data set is already ordered
    for ORDER BY
    This choice must be made because join cache will effectively
    reverse the join order and the results will be sorted by the index
    of the table that uses join cache.