Apply Georg Richter's fixes to remove compilation errors on 64-bit Windows

key now gets changed along with the size of the field as long
as the original key had the same length as the length of the field
(or is unspecified originally, as in the test).

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

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

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into  mysql.com:/home/jimw/my/mysql-4.1-clean

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

into brian-akers-computer.local:/Users/brian/mysql/mysql-5.0

into a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-5.0

- Removed unneccessary variables.
- Made a function of that part of code, which actually changes 
  the line under modifications.
- Fixed memory overrun problem with my_malloc. Too little space
  was reserved.
- Fixed problem in case, when new option was added at the end
  of the section. Before, it was added as the last line of the
  section, even if it left empty lines between.
- Fixed so that the configuration file is not saved unneccessarily,
  if no modifications are done. (file timestamp remains)
- This should fix (at least partially) problems described in
  Bug#10806

into xiphis.org:/usr/home/antony/work2/p1-bug11028.4

into brian-akers-computer.local:/Users/brian/mysql/mysql-5.0

into mysql.com:/var/tmp/sslbug/mysql-4.1

into brian-akers-computer.local:/Users/brian/mysql/mysql-5.0

into rurik.mysql.com:/home/igor/dev/mysql-5.0-0

  Added a test case for bug #10084.
sql_yacc.yy:
  Fixed bug #10084: STRAIGHT_JOIN for expressions with ON was
  added.

into xiphis.org:/usr/home/antony/work2/p1-bug11028.3

  Report error instead of crashing

CURSOR_TYPE_READ_ONLY". The bug was that we (me) don't perform proper
cleanups of the prepared statement when done fetching from a cursor.
Another patch.

into mysql.com:/home/svoj/devel/mysql/yassl-mysql-5.0

into mysql.com:/home/gluh/MySQL/Merge/4.1

  generate proper error message if we use SET ... = NULL for 'set'
  variables

into mysql.com:/home/jonas/src/mysql-4.1-push

into mysql.com:/home/svoj/devel/mysql/yassl-mysql-5.0

into deer.(none):/home/hf/work/mysql-5.0.8482

a fix (bug #11193: error messages gets garbled after reggies latest changeset: ChangeSet@1.2260.1.).

into mysql.com:/home/jonas/src/mysql-4.1-push

  small script fixes
  - Don't use hostname -s as it's linux specific
  - Don't remove result unless scp worked

into mysql.com:/home/jonas/src/mysql-5.0

into mysql.com:/home/jonas/src/mysql-5.0

bug#10711
bug#10058
bug#9363
bug#9025
bug#8918

into brian-akers-computer.local:/Users/brian/mysql/mysql-5.0

when checking if the server is running in mysqld_safe. (Bug #11122)

into mysql.com:/home/dlenev/src/mysql-5.0-bgmd