into  mysql.com:/home/cps/mysql/devel/5.1-curs-bug

                gets deadlocked when dropping w/ log on"

Log tables rely on concurrent insert machinery to add data.
This means that log tables are always opened and locked by
special (artificial) logger threads. Because of this, the thread
which tries to drop a log table starts to wait for the table
to be unlocked. Which will happen only if the log table is disabled.
Alike situation happens if one tries to alter a log table.
However in addition to the problem above, alter table calls
check_if_locking_is_allowed() routine for the engine. The
routine does not allow alter for the log tables. So, alter
doesn't start waiting forever for logs to be disabled, but 
returns with an error.
Another problem is that not all engines could be used for
the log tables. That's because they need concurrent insert.

In this patch we:
(1) Explicitly disallow to drop/alter a log table if it
    is currently used by the logger.
(2) Update MyISAM to support log tables
(3) Allow to drop log tables/alter log tables if log is
    disabled
At the same time we (4) Disallow to alter log tables to
unsupported engine (after this patch CSV and MyISAM are 
alowed)
Recommit with review fixes.

Due to incorrect handling of FLUSH TABLES, log tables were marked for flush,
but not reopened. Later we started to wait for the log table to be closed
(disabled) after the flush. And as nobody disabled logs in concurrent treads,
the command lasted forever.
After internal consultations it was decided to skip logs during FLUSH TABLES.
The reasoning is that logging is done in the "log device", whatever it is
which is always active and controlled by FLUSH LOGS. So, to flush logs
one should use FLUSH LOGS, and not FLUSH TABLES.

into  mysql.com:/home/cps/mysql/trees/mysql-5.1-virgin

into  bodhi.local:/opt/local/work/mysql-5.1-runtime-merge

 - Add loop in mysqlslap that tries to connect up to 10 times if connect
   in thread fails.

 - Disable 3 test cases that crashes slave

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-new-maint

into  bodhi.local:/opt/local/work/mysql-5.1-runtime-merge

into  orca.ndb.mysql.com:/space_old/pekka/ndb/version/my51-bug14935

into  bodhi.local:/opt/local/work/mysql-5.1-runtime-merge

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-new-maint

 - Add prelocking for stored procedures that uses sp or sf
 - Update test result for sp_error(reported as bug#21294)
 - Make note about new error message from sp-error(bug#17244)

Emit an error instead of doing ASSERT

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1-new-maint

into  chilla.local:/home/mydev/mysql-5.1-amerge

(well, im_options in this case, but using existing bug report)

into  willster.(none):/home/stewart/Documents/MySQL/5.1/main

Fixes for change that makes default appear in NODEGROUP as it should be instead of 0 which is an error

Test case fix

into  dator5.(none):/home/pappa/bug20733

into  dator5.(none):/home/pappa/bug20733

 - Disable test case until fixed

 - Only handle return codes from 'pclose' greater than zero as errors.
 - It appears pclose can return -1 with errno set to ECHILD although the executin
process completed successfully.