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.




mysql-test/r/rpl_temporary.result:
  results changed
mysql-test/t/rpl_temporary.test:
  test to generate problematic drop in binlog to feed it to restarting slave
  to see no stop.
sql/sql_base.cc:
  change in drop temprorary tables alg in close_temporary_tables.

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

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. 


mysql-test/r/order_by.result:
  Added a test case for bug #18767.
mysql-test/t/order_by.test:
  Added a test case for bug #18767.
sql/sql_lex.h:
  Fixed bug #18767.
  Placed the code the created a fake SELECT_LEX into a separate function.
sql/sql_parse.cc:
  Fixed bug #18767.
  Placed the code the created a fake SELECT_LEX into a separate function.
sql/sql_select.cc:
  Fixed bug #18767.
  Changed the condition on which a SELECT is treated as part of a UNION.
  The SELECT in 
  (SELECT ... ORDER BY order_list1 [LIMIT n]) ORDER BY order_list2 
  now is handled in the same way as the first SELECT in a UNION
  sequence.
sql/sql_union.cc:
  Fixed bug #18767.
  Changed the condition at which a SELECT is treated as part of a UNION.
  The SELECT in 
  (SELECT ... ORDER BY order_list1 [LIMIT n]) ORDER BY order_list2 
  now is handled in the same way as the first SELECT in a UNION
  sequence.
sql/sql_yacc.yy:
  Fixed bug #18767.
  Changed the condition at which a SELECT is treated as part of a UNION.
  The SELECT in 
  (SELECT ... ORDER BY order_list1 [LIMIT n]) ORDER BY order_list2 
  now is handled in the same way as the first SELECT in a UNION
  sequence. In the same way is handled the SELECT in
  (SELECT ... LIMIT n) ORDER BY order list.
  Yet if there is neither ORDER BY nor LIMIT in the single-select
  union construct
  (SELECT ...) ORDER BY order_list
  then it is still handled as simple select with an order clause.

 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.


innobase/dict/dict0dict.c:
  Applied innodb-4.1-ss22 snapshot.
   dict_foreign_error_report(): Always print a newline after invoking
    dict_print_info_on_foreign_key_in_create_format() (Bug#16814).
   Refuse tables that use reserved column names (Bug#18934).
innobase/dict/dict0mem.c:
  Applied innodb-4.1-ss22 snapshot.
   Refuse tables that use reserved column names (Bug#18934).
innobase/include/dict0dict.h:
  Applied innodb-4.1-ss22 snapshot.
   Refuse tables that use reserved column names (Bug#18934).
innobase/include/dict0mem.h:
  Applied innodb-4.1-ss22 snapshot.
   Refuse tables that use reserved column names (Bug#18934).
innobase/include/univ.i:
  Applied innodb-4.1-ss22 snapshot.
innobase/row/row0mysql.c:
  Applied innodb-4.1-ss22 snapshot.
   Refuse tables that use reserved column names (Bug#18934).

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

  Clean up test case for bug#14169


mysql-test/t/func_gconcat.test:
  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.


mysql-test/r/func_gconcat.result:
  Added DROP TABLE command to the test case for bug 14169.

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.


mysql-test/r/func_gconcat.result:
  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.


sql/lock.cc:
  Bug#18544 - LOCK TABLES timeout causes MyISAM table corruption
  Resetting the lock type in the open table(s) lock data
  after a locking error.

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.


mysql-test/r/key_cache.result:
  Added a test case for bug #19079.
mysql-test/t/key_cache.test:
  Added a test case for bug #19079.

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

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


ndb/src/kernel/blocks/ndbcntr/NdbcntrInit.cpp:
  Auto merged

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

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

into  mysql.com:/usr/home/bar/mysql-4.1.b18691

MySQL 4.1
  and Bug#16920 rpl_deadlock_innodb fails in show slave status (reported for MySQL 5.1)
  - backport of several fixes done in MySQL 5.0 to 4.1
  - fix for new discovered instability (see comment on Bug#12429 + Bug#16920)
  - reenabling of testcases


mysql-test/r/rpl_deadlock.result:
  Updated results
mysql-test/r/rpl_relayrotate.result:
  Updated results
mysql-test/t/disabled.def:
  Reenabling of tests
mysql-test/t/rpl_deadlock.test:
  - replace sleep with real_sleep (backport fix for Bug#15624 MySQL 5.0)
  - egalized value for Slave_IO_Running 
  - line 105 (backport fix for Bug#12429 MySQL 5.0)
  - line 85 (see comment in Bug#12429 
             + Bug#16920 rpl_deadlock_innodb fails in show slave status)
  - improve readability of show slave status output (--vertical_results)
mysql-test/t/rpl_relayrotate.test:
  - Replace select ... with select max(a)
  - add sync_with_master (backport fix done by Kristian in MySQL 5.0 because of timing
    problems similar to Bug#15624)
mysql-test/t/rpl_until.test:
  Add wait_for_slave_to_stop like in the current MySQL 5.0 version of this test.
  I assume this makes the test results more predictable.

mysql-test/r/func_compress.result:
  Fix for bug #18643: crazy UNCOMPRESS().
    - test-case
mysql-test/t/func_compress.test:
  Fix for bug #18643: crazy UNCOMPRESS().
    - test-case
sql/item_strfunc.cc:
  Fix for bug #18643: crazy UNCOMPRESS().
    - set null_value.

into  april.(none):/home/svoj/devel/mysql/BUG17917/mysql-4.1

sql/mysqld.cc:
  Fix a typo.

into  april.(none):/home/svoj/devel/mysql/BUG17917/mysql-4.1

Retrieving data from compressed MyISAM table which is bigger than 4G on 32-bit box
with mmap() support results in server crash.

mmap() accepts length of bytes to be mapped in second param, which is 32-bit
size_t. But we pass data_file_length, which is 64-bit my_off_t. As a result only
first data_file_length % 4G were mapped.

This fix adds additional condition for mmap() usage, that is use mmap() for
compressed table which size is no more than 4G on 32-bit platform.


myisam/mi_packrec.c:
  Use mmap() for compressed table which size is no more than 4G on 32-bit platform.

Conversion from int and real numbers to UCS2 didn't work fine: 
CONVERT(100, CHAR(50) UNICODE)
CONVERT(103.9, CHAR(50) UNICODE)

The problem appeared because numbers have binary charset, so,
simple charset recast binary->ucs2 was performed
instead of real conversion.

Fixed to make numbers pretend to be non-binary.


mysql-test/r/ctype_ucs.result:
  Adding test case
mysql-test/t/ctype_ucs.test:
  Adding test case
sql/item_timefunc.cc:
  Adding new member from_cs, to replace my_charset_bin
  to a non-binary charset when converting from numbers to UCS2
sql/item_timefunc.h:
  Adding new member from_cs, to replace my_charset_bin
  to a non-binary charset when converting from numbers to UCS2

used

In a simple queries a result of the GROUP_CONCAT() function was always of 
varchar type.
But if length of GROUP_CONCAT() result is greater than 512 chars and temporary
table is used during select then the result is converted to blob, due to
policy to not to store fields longer than 512 chars in tmp table as varchar
fields.

In order to provide consistent behaviour, result of GROUP_CONCAT() now
will always be converted to blob if it is longer than 512 chars.
Item_func_group_concat::field_type() is modified accordingly.


mysql-test/t/func_gconcat.test:
  Added test case for bug#14169: type of group_concat() result changed to blob if tmp_table was used
mysql-test/r/func_gconcat.result:
  Added test case for bug#14169: type of group_concat() result changed to blob if tmp_table was used
sql/unireg.h:
  Added the CONVERT_IF_BIGGER_TO_BLOB constant
sql/sql_select.cc:
  Fixed bug#14169: type of group_concat() result changed to blob if tmp_table was used
  The unnamed constant 255 in the create_tmp_field() and create_tmp_field_from_item() functions now defined as the CONVERT_IF_BIGGER_TO_BLOB constant.
  The create_tmp_field() function now converts the Item_sum string result to a blob field based on its char length.
sql/item_sum.h:
  Fixed bug#14169: type of group_concat() result changed to blob if tmp_table was used
  To the Item_func_group_concat calls added the member function field_type() which returns the BLOB or VAR_STRING type based on the items length.
sql/item_func.cc:
  Fixed bug#14169: type of group_concat() result changed to blob if tmp_table was used
  In the Item_func::tmp_table_field() function the unnamed constant 255 is changed to the CONVERT_IF_BIGGER_TO_BLOB constant.
  The Item_func::tmp_table_field() function now measures the result length in chars rather than bytes when converting string result to a blob.

into  mysql.com:/home/mydev/mysql-4.1-bug5390

into  mysql.com:/home/mydev/mysql-4.1-bug5390

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


acinclude.m4:
  Auto merged
configure.in:
  Auto merged

into  mysql.com:/usr/home/ram/work/mysql-4.1


mysql-test/r/func_op.result:
  Auto merged
sql/item_func.cc:
  Auto merged
mysql-test/t/func_op.test:
  SCCS merged

into  sanja.is.com.ua:/home/bell/mysql/bk/work-4.0

into  mysql.com:/usr/home/ram/work/mysql-4.0

into  sanja.is.com.ua:/home/bell/mysql/bk/work-4.0

code. (Bug #13621)


configure.in:
  Test whether atomic_add() and atomic_sub() are available in C++
  code, since that is primarily where we will be using them.

into  mysql.com:/usr/local/mysql/mysql-4.1

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

into  mysql.com:/usr/local/mysql/mysql-4.1