fixed error handling in subselect fix_field

into sanja.is.com.ua:/home/bell/mysql/work-4.1

into sanja.is.com.ua:/home/bell/mysql/work-full-4.1

into mysql.r18.ru:/usr/home/ram/mysql-4.1

test case

into sanja.is.com.ua:/home/bell/mysql/work-explain_union-4.1

Now MySQL 4.1 is up to date with all patches from 4.0.4 and passes the test suite.

into sanja.is.com.ua:/home/bell/mysql/work-merge_lex-4.1

into mysql.r18.ru:/usr/home/ram/mysql-4.1

no ulong type, one should use unsigned long instead

   up-to-date BK changelog instead of sql/ChangeLog, add LICENSE if
   available)

Warning handling and initial prepared statement handling (last not complete yet)
Changed a lot of functions that returned 0/1 to my_bool type.
GRANT handling now uses read/write locks instead of mutex
Change basic net functions to use THD instead of NET
(needed for 4.1 protocol)
Use my_sprintf instead of sprintf() + strlen()
Added alloc_query() to be able to chare query initialization code with
prepared statements.
Cleanup handling of SHOW COUNT(*) WARNINGS and SELECT LAST_INSERT_ID()

Note that the following test fails (will be fixed ASAP):
sub_select, union, rpl_rotate_logs and rpl_mystery22

Don't require UPDATE_ACL for REPLACE

 - added some missing changelog entries to the 4.0.5 changelog
 - applied small fix to configure.in from monty (already applied manually
   to configure.in of the 4.0.4 release source files - not relevant for
   normal builds anyway)

as expected and returned default charset instead:
SET @x = _koi8_ru'test';
SELECT CHARSET(@x);