into  mysql.com:/home/kent/bk/mysql-5.1.16-build

```yaml
Merge pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.1-build-work-20013
into  pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.1-build
```

reorder lines from BUG#20013 to resemble order in 5.0 

into  ymer.(none):/tmp/mysql-5.1

  #if => #ifdef

into  mysql.com:/home/my/mysql-5.1

Fixed compile-pentium64 scripts
Fixed wrong estimate of update_with_key_prefix in sql-bench
Merge bk-internal.mysql.com:/home/bk/mysql-5.1 into mysql.com:/home/my/mysql-5.1
Fixed unsafe define of uint4korr()
Fixed that --extern works with mysql-test-run.pl
Small trivial cleanups
This also fixes a bug in counting number of rows that are updated when we have many simultanous queries
Move all connection handling and command exectuion main loop from sql_parse.cc to sql_connection.cc
Split handle_one_connection() into reusable sub functions.
Split create_new_thread() into reusable sub functions.
Added thread_scheduler; Preliminary interface code for future thread_handling code.

Use 'my_thread_id' for internal thread id's
Make thr_alarm_kill() to depend on thread_id instead of thread
Make thr_abort_locks_for_thread() depend on thread_id instead of thread
In store_globals(), set my_thread_var->id to be thd->thread_id.
Use my_thread_var->id as basis for my_thread_name()
The above changes makes the connection we have between THD and threads more soft.

Added a lot of DBUG_PRINT() and DBUG_ASSERT() functions
Fixed compiler warnings
Fixed core dumps when running with --debug
Removed setting of signal masks (was never used)
Made event code call pthread_exit() (portability fix)
Fixed that event code doesn't call DBUG_xxx functions before my_thread_init() is called.
Made handling of thread_id and thd->variables.pseudo_thread_id uniform.
Removed one common 'not freed memory' warning from mysqltest
Fixed a couple of usage of not initialized warnings (unlikely cases)
Suppress compiler warnings from bdb and (for the moment) warnings from ndb

into  mysql.com:/home/my/mysql-5.0

into  mysql.com:/home/my/mysql-5.0

into  mysql.com:/home/my/mysql-5.0

Suppress compiler warnings from bdb and (for the moment) warnings from ndb

into  mysql.com:/home/my/mysql-5.0

Fixed a couple of usage of not initialized warnings (unlikely cases)

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

into  perch.ndb.mysql.com:/home/jonas/src/51-work

into  clam.ndb.mysql.com:/export/home/space/pekka/ndb/version/my51-rel

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

  Make sure GCP_SAVEREQ is not allowed before START_RECCONF has been sent...START_RECREQ is not enough

into  poseidon.mysql.com:/home/tomas/mysql-5.1-new-ndb

  Can only use mi_dynmap_file() if HAVE_MMAP is defined

into  mysql.com:/home/my/mysql-5.0

This also fixes a bug in counting number of rows that are updated when we have many simultanous queries

  Calculate and output line count first to be
  compatible with older versions of Test::Harness

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.1-new-ndb

into  perch.ndb.mysql.com:/home/jonas/src/51-work

  Make StartREDO come up as default in cluster log

  make sure logPartPtr is correctly initialized

into  eel.(none):/home/jonas/src/51-work

  fix overflow that could occur when have either lots of dd-data or very high dd-parallelism

into  trift2.:/MySQL/M50/push-5.0

Previous declaration in m_string.h

into  trift2.:/MySQL/M51/push-5.1