Cleanup of latest rewrite of innobase_mysql_print_thd; from now on changing this code is forbidden unless a written permission is received from Heikki 3 days in advance

Moved IF(test,column,NULL) code to 4.0
Changed mysys_priv.h to include my_pthread.h or my_no_pthread.h.
Removed some CR's in os2 files.

  Add tentative code which can be used in HANDLER implementation for InnoDB

  Redefine sprintf as ut_sprintf inside InnoDB code; some old Unixes may have a pointer as the return type of sprintf
lock0lock.c:
  Add safety against buffer overruns in latest deadlock info
srv0srv.c:
  Add safety against buffer overruns in SHOW INNODB STATUS
os0thread.h, os0thread.c:
  Fix a portability bug introduced in Windows when we changed os_thread_id_t to be the same as os_thread_t

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

and removed the 3.23.53 News section for now until 3.23.52 is officially
tagged.

 - Only define alloca as a compiler builtin, if we use GCC and there
   is no alloca.h installed

  Add some more safety margin to buffer sizes in prints

  Found the bug in modified innobase_mysqld_print_thd; the person who modifies code should test that his change works

  Revert changes to sprintf until we know why control characters scrambled the output

Remove not needed locks in SHOW OPEN TABLES

   compiler builtin when using gcc

  Merge InnoDB-3.23.52d

Fixed bug in automatic repair of MyISAM tables where table cache was not locked properly

Removed Heikki's patch for handling this.

Added option --host to mysqlhotcopy

  In HP-UX-10.20, but not in HP-UX-11.0, the return value of pthread_mutex_trylock is inverted

Use MYSQL_CONFIG_NAME instead of "my" as the configuration file name.

This should fix some possible table cache corruptions when doing
OPTIMIZE or REPAIR table when other threads are opening new tables.

(Merge of code from 4.0)

  Remove the complex typecast used to convert a HP-UX pthread struct to os_thread_id_t; the typecast seemed to work wrong in gcc-3.1 on HP-UX-10.20