Extend buffer size to allow for longer log messages

Update comments
Add more tests for "let from query"

into  shellback.(none):/home/msvensson/mysql/mysql-5.0-maint

 - Move the code to generate test report to the test tool(in this
   case mysqltest) where the best control of what failed is
- Simplify the code in mysql-test-run.pl
- mysqltest will now find what diff to use in a best effort attempt
  using "diff -u", "diff -c" and finally dumping the two files verbatim
  in the report.

into  mysql.com:/home/ram/work/b30088/b30088.5.0

Problem: thd->thread_specific_used flag is not set executing a statement
containig connection_id() function using PS protocol, that leads to 
improper binlog event creation.

Fix: set the flag in the Item_func_connection_id::fix_fields().

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/50

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/50

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/41

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/50

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/50

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/41

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/50

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/50

into  ramayana.hindu.god:/home/tsmith/m/bk/maint/41

into  mysql.com:/home/ram/work/b29928.new/b29928.new.5.0

restores from mysqlbinlog out

Problem: using "mysqlbinlog | mysql" for recoveries the connection_id() 
result may differ from what was used when issuing the statement.

Fix: if there is a connection_id() in a statement, write to binlog
SET pseudo_thread_id= XXX; before it and use the value later on.

into  production.mysql.com:/usersnfs/jperkin/bk/mysql-5.0-maint

into  production.mysql.com:/usersnfs/jperkin/bk/mysql-5.0-maint

into  production.mysql.com:/usersnfs/jperkin/bk/mysql-4.1-maint

which does not work.  Removing these attempted privileges makes
this identical to option 5 so remove it completely.  The spirit
of the program appears to be aimed at database privileges, so do
not add another option for granting global privileges as it may
be unexpected.  Fixes bug#14618 (same as previous patch, this
time applied to -maint tree).

into  sin.intern.azundris.com:/home/tnurnberg/10776/50-10776

  - test result.

Problem: we don't proper handle "" value of the --myisam-recover option.

Fix: turn off myisam recovering if --myisam-recover="" is set.

mysqld hasn't been built on AIX with ndb-everything in quite a while.
this allowed a variety of changes to be added that broke the AIX build
for both the GNU and IBM compilers (but the IBM suite in particular).
Changeset lets build to complete on AIX 5.2 for users of the GNU and
the IBM suite both. Tudo bem?

into  bodhi.(none):/opt/local/work/mysql-5.0-runtime

into  moonbone.local:/mnt/gentoo64/work/24989-bug-5.0-opt-mysql

  Warning fixed.

into  magare.gmz:/home/kgeorge/mysql/autopush/B27417-5.0-opt

extend the assert so it will run the testsuite

into  mysql.com:/home/psergey/mysql-5.0-bug29582

- Don't call mysql_select() several times for the select that enumerates
  a temporary table with the results of the UNION. Making this call for
  every subquery execution caused O(#enumerated-rows-in-the-outer-query) 
  memory allocations.
- Instead, call join->reinit() and join->exec(), and
  = disable constant table detection for such joins,  
  = provide special handling for table-less constant subqueries.

into  mysql.com:/home/hf/work/29717/my50-29717

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt