- partial backport of code from 5.1, do cot compare_record for engines that do not read all columns during update

- added missing retrieval of hidden primary key

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0

+ adopted signal to be as close as possible to 5.1...

- correction of previous patch

- make sure to allocate just enough pages in the fragments by using the actual
  row count from the backup, to avoid over allocation of pages to fragments, and
  thus avoid the bug

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  mysql.com:/usr/home/ram/work/mysql-5.0

  Additional fix for #16377 for bigendian platforms
sql_select.cc, select.result, select.test:
  After merge fix

into moonbone.local:/work/tmp_merge-5.0-opt-mysql

into moonbone.local:/work/tmp_merge-4.1-opt-mysql

  Added test case for bug#18759 Incorrect string to numeric conversion.  
select.test:
  Added test case for bug#18759 Incorrect string to numeric conversion.
item_cmpfunc.cc:
  Cleanup after fix for bug#18360 removal

into  mysql.com:/home/emurphy/mysql-5.0-heikki

Fixes bug#17264, for alter table on win32 for successfull operation completion
it is used TL_WRITE(=10) lock instead of TL_WRITE_ALLOW_READ(=6), however here
in innodb handler TL_WRTIE is lifted to TL_WRITE_ALLOW_WRITE, which causes
race condition when several clients do alter table simultaneously.

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  mysql.com:/mnt/storeage/mysql-5.0

into sunlight.local:/home/evgen/tmp_merge-5.0-opt-mysql

  After merge fix

  After merge fix

into  mysql.com:/home/stewart/Documents/MySQL/5.0/bugsmerge

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

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

into  mysql.com:/users/lthalmann/bk/MERGE/mysql-4.1-merge

into  mysql.com:/users/lthalmann/bk/MERGE/mysql-5.0-merge

into  mysql.com:/users/lthalmann/bk/MERGE/mysql-5.0-merge

into moonbone.local:/work/tmp_merge-4.1-opt-mysql

into moonbone.local:/work/tmp_merge-4.1-opt-mysql