The IN() function uses agg_cmp_type() to aggregate all types of its arguments
to find out some common type for comparisons. In this particular case the 
char() and the int was aggregated to double because char() can contain values
like '1.5'. But all strings which do not start from a digit are converted to
0. thus 'a' and 'z' become equal. 
This behaviour is reasonable when all function arguments are constants. But 
when there is a field or an expression this can lead to false comparisons. In
this case it makes more sense to coerce constants to the type of the field
argument.

The agg_cmp_type() function now aggregates types of constant and non-constant
items separately. If some non-constant items will be found then their
aggregated type will be returned. Thus after the aggregation constants will be
coerced to the aggregated type. 

  System variable was added out of lexical order.

into sergbook.mysql.com:/usr/home/serg/Abk/mysql-4.1

into  perch.ndb.mysql.com:/home/jonas/src/mysql-4.1

into  mysql.com:/home/alexi/innodb/mysql-4.1-innodb

into  mysql.com:/home/alexi/innodb/mysql-4.1-innodb

 Use files innodb_mysql.[test|result] instead.

(based on the fact that packet is ALWAYS \0 terminated, see my_net_read)

(reported by Stefano Di Paola)

  Handle early abort of scan, so that resources are correctly freed

into  mysql.com:/data0/knielsen/mysql-4.1-mtr-fix

into  production.mysql.com:/usersnfs/rkalimullin/4.1.b17896

into  polar.kitebird.com:/src/extern/MySQL/bk/mysql-4.1

  myisam_ftdump options: --help first, then rest in
  lexical order.

accounting non-ai32 in tmpkeyval. This changeset is supposed to be specifically for 4.1.
Another changeset is going to push into 5. 

  Backporting a changeset made for 5.0. Comments from there:

  The fix refines the algorithm of generating DROPs for binlog.
  Temp tables with common pseudo_thread_id are clustered into one query.
  Consequently one replication event per pseudo_thread_id is generated.

into  mysql.com:/home/alexi/innodb/mysql-4.1

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

into  production.mysql.com:/usersnfs/rkalimullin/4.1.b18643

- after review fixes

into  rurik.mysql.com:/home/igor/dev/mysql-4.1-0

The bug caused wrong result sets for union constructs of the form
(SELECT ... ORDER BY order_list1 [LIMIT n]) ORDER BY order_list2.
For such queries order lists were concatenated and limit clause was
completely neglected. 

 Fix BUG#16814: "SHOW INNODB STATUS format error in LATEST FOREIGN KEY ERROR section"
     Add a missing newline to the LAST FOREIGN KEY ERROR section in SHOW INNODB STATUS
     output.
 Fix BUG#18934: "InnoDB crashes when table uses column names like DB_ROW_ID".
     Refuse tables that use reserved column names.

into  production.mysql.com:/usersnfs/mleich/src

  Clean up test case for bug#14169

Temporarily commented out a query from the test case for bug 14169 to make it pass with --ps-protocol.

into  rurik.mysql.com:/home/igor/dev/mysql-4.1-2

into moonbone.local:/work/14169-bug-4.1-mysql

  Corrected test case for the bug#14169 to make it pass in --ps-protocol mode.

After a locking error the open table(s) were not fully
cleaned up for reuse. But they were put into the open table
cache even before the lock was tried. The next statement
reused the table(s) with a wrong lock type set up. This
tricked MyISAM into believing that it don't need to update
the table statistics. Hence CHECK TABLE reported a mismatch
of record count and table size.

Fortunately nothing worse has been detected yet. The effect
of the test case was that the insert worked on a read locked
table. (!)

I added a new function that clears the lock type from all
tables that were prepared for a lock. I call this function
when a lock failes.

No test case. One test would add 50 seconds to the
test suite. Another test requires file mode modifications.
I added a test script to the bug report. It contains three
cases for failing locks. All could reproduce a table
corruption. All are fixed by this patch.

This bug was not lock timeout specific.

The bug caused a reported index corruption in the cases when
key_cache_block_size was not a multiple of myisam_block_size,
e.g. when key_cache_block_size=1536 while myisam_block_size=1024.

  fix api_signal_log print of uncond signals

into  mysql.com:/home/matthias/Arbeit/mysql-4.1/src-1

into  mysql.com:/home/stewart/Documents/MySQL/4.1/merge

into  mysql.com:/home/stewart/Documents/MySQL/4.1/merge