with memory roots in THD/Statement/Item_arena.
Added assertions preventing memory allocation on bzero'ed MEM_ROOT since it is worked by 
pure luck and was very ineffective.


include/my_sys.h:
  Reimplementation of Monty's optimization of clear_alloc_root().
  Now clear_alloc_root() can be used only for detaching memory associated with MEM_ROOT
  (e.g. to avoid its freeing). It can not be used for MEM_ROOT initialization any longer 
  (it was bad idea anyway since memory allocation on such MEM_ROOT was very ineffective 
  and worked by pure luck).
  Introduced ALLOC_ROOT_MIN_BLOCK_SIZE constant.
mysys/my_alloc.c:
  Added description of init_alloc_root().
  Added assertions to alloc_root() and reset_root_defaults() so now they can only be used
  on previosly initialized MEM_ROOT. (It worked for bzeroed MEM_ROOT before but 
  by pure luck and very inefficiently). Calling free_root() on bzero'ed MEM_ROOT
  is still ok (we can't remove this easily because of static MEM_ROOTs).
  Also now using ALLOC_ROOT_MIN_BLOCK_SIZE constant inside these functions.
sql/opt_range.cc:
  Fixed get_quick_select_for_ref() function to not use bzero'ed MEM_ROOT for allocation.
  Also QUICK_RANGEs created in this function should be created in memory root of QUICK_SELECT.
sql/sql_class.cc:
  Implementation of Monty's idea about clear_alloc_root() optimization and cleanup of work 
  with memory roots in THD/Statement/Item_arena.
  Now we are always initing THD::transaction.mem_root and THD::mem_root in THD constructor 
  (without memory allocation and with minimal block size) and then later change their
  parameters in THD::init_for_queries() (this is partially because we can't allocate anything
  on bzero'ed memory roots anymore).
  Item_arena() constructor is now trivial and is used only then Item_arena is created as backup
  storage for other Item_arena (we use Item_arena(bool) now if it is part of Statement).
  Both trivial Item_arena constructor and destructor are now inline.
  Removed unneeded clear_alloc_root from Item_arena::restore_backup_item_arena().
sql/sql_class.h:
  Both trivial Item_arena constructor and destructor are now inline.
  Commented various Item_arena constructors.

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

with a fixed constant to pass on QNX:
max_data_file_length is calculated depending on max possible value of
record pointer. It's different on QNX, so the difference in results is OK.


mysql-test/t/ps.test:
  A quick fix for bug#5556: replace a column of SHOW TABLE STATUS result
  with a fixed constant to pass on QNX:
  max_data_file_length is calculated depending on max value of record
  pointer. It's different on QNX, so the result difference is intentional.

into hundin.mysql.fi:/home/marko/j/mysql-4.1


sql/ha_innodb.cc:
  Auto merged
sql/ha_innodb.h:
  Auto merged
sql/mysqld.cc:
  Auto merged

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


sql/sql_lex.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged

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


sql/item.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged

acinclude.m4:
  Uncommented zlib library message checking for Netware.
netware/init_db.sql:
  Applied a patch for Netware.
netware/test_db.sql:
  Applied a patch for Netware.

into gw.mysql.r18.ru:/usr/home/ram/work/4.1

into gw.mysql.r18.ru:/usr/home/ram/work/4.1

mysql-test/r/func_compress.result:
  clean-up. The length of compress() may depend on zlib version, etc.
mysql-test/t/func_compress.test:
  clean-up. The length of compress() may depend on zlib version, etc.

of EXPLAIN SELECT, rather than binary strings.

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

into poseidon.(none):/home/tomas/mysql-4.1-ndb-merge

set a printout in SocketClient only for debug


ndb/src/common/util/SocketClient.cpp:
  set a printout only for debug
scripts/mysql_install_db.sh:
  mysql_install_db should do skip-ndbcluster

  Slightly improved the fix for bug #5406.


sql/opt_sum.cc:
  Slightly improved the fix for bug #5406.

  Bug #5561 No BINARY_FLAG in metadata


sql/item.cc:
  Bug #5561 No BINARY_FLAG in metadata

into mysql.com:/usr/local/home/marty/MySQL/test/mysql-4.1


ndb/src/common/transporter/TransporterRegistry.cpp:
  Auto merged
ndb/src/ndbapi/NdbDictionaryImpl.cpp:
  Auto merged

into neptunus.(none):/home/magnus/mysql/mysql-4.1

into eagle.mysql.r18.ru:/home/vva/work/mysql.orig/test/mysql-4.1

(for octane2)

included term.h if there isn't termcap.h in cmd-line-utils/libedit/term.c


cmd-line-utils/libedit/term.c:
  fixed Bug #5589 "libedit compile failure in term.c"
  
  (for octane2)
  
  included term.h if there isn't termcap.h

into neptunus.(none):/home/magnus/mysql/mysql-4.1

ndb/src/mgmsrv/main.cpp:
  Print error if read of local config file fails.

on intelxeon3 (Solaris x86))


mysql-test/r/ps_2myisam.result:
  Test results fixed (order by for a couple of statements in the PS test).
mysql-test/r/ps_3innodb.result:
  Test results fixed (order by for a couple of statements in the PS test).
mysql-test/r/ps_4heap.result:
  Test results fixed (order by for a couple of statements in the PS test).
mysql-test/r/ps_5merge.result:
  Test results fixed (order by for a couple of statements in the PS test).
mysql-test/r/ps_6bdb.result:
  Test results fixed (order by for a couple of statements in the PS test).

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b5546

into mysql.com:/usr/home/bar/mysql-4.1

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b5546

  removed help text for non implemented command


ndb/src/mgmclient/CommandInterpreter.cpp:
  removed help text for non implemented command

into poseidon.(none):/home/tomas/mysql-4.1-ndb

  SQL_SELECT_LIMIT=0 protection


client/mysql.cc:
  SQL_SELECT_LIMIT=0 protection