Backport of a part of this changeset of 4.1:
ChangeSet@1.1753.1.1, 2004-04-05 13:56:05+03:00, monty@mysql.com
which fixes the bug.

into mysql.com:/home/mysql_src/mysql-4.0

too big by 6 bytes. So I add code to substract 6 bytes if the master is 3.23.
This is not perfect (because it won't work if the slave I/O thread has not
noticed yet that the master is 3.23), but as long as the slave I/O thread
starts Exec_master_log_pos will be ok.
It must be merged to 4.1 but not to 5.0 (or it can be, because of #if MYSQL_VERSION_ID),
because 5.0 already works if the master is 3.23 (and in a more natural way:
in 5.0 we store the end_log_pos in the binlog and relay log).
I had to move functions from slave.h to slave.cc to satisfy gcc.

instead of stdout or fixed-size memory buffers

into hundin.mysql.fi:/home/marko/j/mysql-4.0

into eagle.mysql.r18.ru:/home/vva/work/BUG_3361/mysql-4.0

into hundin.mysql.fi:/home/marko/i/mysql-4.0

into serg.mylan:/usr/home/serg/Abk/mysql-4.0

when dropping database (Bug #3058)

into hundin.mysql.fi:/home/marko/j/mysql-4.0

into eagle.mysql.r18.ru:/home/vva/work/BUG_3200/mysql-4.0

into eagle.mysql.r18.ru:/home/vva/work/BUG_3200/mysql-4.0

into hundin.mysql.fi:/home/marko/j/mysql-4.0

  Add an accessor function to set srv_io_thread_op_info, change the type to const char*, also change the type of srv_io_thread_function to const char*

  Add assertions to check that we do not go out of bounds of io thread status array
os0file.c:
  Fix memory corruption (assertion failure on line 244 of sync0sync.c) reported by Miguel in a Windows build of MySQL-4.1.2. The bug is present in all InnoDB versions in Windows, but it depends on how the linker places a static array in srv0srv.c, whether the bug shows itself. 4 bytes were overwritten with a pointer to a statically allocated string: 'get windows aio return value'.

into hundin.mysql.fi:/home/marko/j/mysql-4.0

into gluh.mysql.r18.ru:/home/gluh/Bugs/mysql-4.0

into sinisa.nasamreza.org:/mnt/work/mysql-4.0

the extra files being present.

into mysql.com:/home/my/mysql-4.0

into eagle.mysql.r18.ru:/home/vva/work/BUG_2342/mysql-4.0

"Running ANALYZE TABLE on bdb table inside a transaction hangs server thread"

1. added new status HA_ADMIN_REJECT and processing of it in mysql_admin_table
2. got ha_berkley::analyze to return HA_ADMIN_REJECT if there are any 
 transactions with the table.. 

into sinisa.nasamreza.org:/mnt/work/mysql-4.0

into hundin.mysql.fi:/home/heikki/mysql-4.0

  Backport from 4.1: make mem_current_allocated_memory global variable