- Make a rough filtering of the servers error log and write
   all suspicious warnings to $error_log.warnings
   The .warnings file is then examined more carefully by check_warnings.test
 - This will speed things up, doing all of this in a server running
   under valgrind takes far too long time.

 - Add a "skip-ssl=1" to [mysqltest] section so that 
   mysqltest will not run with ssl turned on by default 
   but stil be able to turn it on when requested
 - This avoids that check_warnings and check_testcase
   connects to the server woth SSL turned on

 - pass empty "--plugin-dir" if simple parser was not found.

 - Pass verbose flag to My::SafeProcess also when starting
   check_warnings and run_on_all

 - Suppress intentional safemalloc dump warnings
 - add fflush(stdout) to make sure that the "End safemalloc memory dump." marker is flushed.

 - rewrite "check warnings" to be faster by not creating a full join
   between error_log and suspicious_patterns while running REGEXP.
   Instead add a column to error_log that will be set to 1 to indicate
   a warning and run the 6 REGEXP's we have for suspicious lines as
   6 separate full table scans.
 - Remove the "suspicious_patterns" table from mtr db
 - Use 'xykls37' as separator when loading the error log, that line should
   hopefully never exist in a line that should be a warning

 - default parallel to 1(again)

 - turn auto detection of parallelism value ON again

 - disable check of .err-old until bug has been fixed

 - fix typo, use "$old_log_error" as name when loading from .err-old file

 - extend debug prints for "permission denied"

 - Clear test variables "comment" and "logfile" to make sure thay aren't
  already set from previous run of same test
 - Print warning if test result already set and set it anyway

 - fix typo

 - Don't save ndb_*_fs directory after test failure

 - Add name of error log file to the erro log table to get better
   erorr message when warning is found

 - Add debug prints for analyzing mkdir "Permission denied" failure

 - Rewrite "check testcase" to use LOAD DATA INFILE instead of 'load_file'
   in order to speed up the reading of the servers error log.

mysql-test/include/check-warnings.test:
  Use LOAD DATA to load the servers error log into error_log table and then
  call 'check_warning' stored procedure to filter out any unexpected warnings

conflicts:
  Text conflict in client/mysqltest.cc
  Text conflict in mysql-test/include/wait_until_connected_again.inc
  Text conflict in mysql-test/lib/mtr_report.pm
  Text conflict in mysql-test/mysql-test-run.pl
  Text conflict in mysql-test/r/events_bugs.result
  Text conflict in mysql-test/r/log_state.result
  Text conflict in mysql-test/r/myisam_data_pointer_size_func.result
  Text conflict in mysql-test/r/mysqlcheck.result
  Text conflict in mysql-test/r/query_cache.result
  Text conflict in mysql-test/r/status.result
  Text conflict in mysql-test/suite/binlog/r/binlog_index.result
  Text conflict in mysql-test/suite/binlog/r/binlog_innodb.result
  Text conflict in mysql-test/suite/rpl/r/rpl_packet.result
  Text conflict in mysql-test/suite/rpl/t/rpl_packet.test
  Text conflict in mysql-test/t/disabled.def
  Text conflict in mysql-test/t/events_bugs.test
  Text conflict in mysql-test/t/log_state.test
  Text conflict in mysql-test/t/myisam_data_pointer_size_func.test
  Text conflict in mysql-test/t/mysqlcheck.test
  Text conflict in mysql-test/t/query_cache.test
  Text conflict in mysql-test/t/rpl_init_slave_func.test
  Text conflict in mysql-test/t/status.test

The original goal of the test, as reported on BUG #25721, is to check whether 
a deadlock happens or not when concurrently CREATING/ALTERING/DROPPING the 
same server. For that a procedure (p1) is created that runs the exact same 
CREATE/ALTER/DROP statements for 10K iterations and two different connections 
(threads - t1 and t2) call p1 concurrently. At the end of the 10K iterations, 
the test checks if there was errors while running the loop (SELECT e >0).
      
The problem is that In some cases it may happen that one thread, t1, gets 
scheduled to execute with just enough time to complete the iteration and 
never bumps into the other thread t2. Meaning that t1 will never run into an 
SQL exception. On the other hand, the other thread, t2, may run into t1 and 
never issue any/part of its own statements because it will throw an SQLEXCEPTION. 
This is probably the case for failures where only one value differs.
      
Furthermore, there is a third scenario: both threads are scheduled to run 
interleaved for each iteration (or even one thread completes all iterations 
before the other starts). In this case, both will succeed without any error. 
This is probably the case for the failure that reports two different values.
      
This patch addresses the failure in pushbuild by removing the error counting 
and the printout (SELECT > 0) at the end of the test. A timeout should occur 
if the error that the test is checking surfaces.

 - Additional patch with improved protection by putting it all inside an "eval"
 - Calling 'hostpath' on a truncated socket may also croak.
 - Remove the need to create any directory parts of "path" inside the function.

 - Fix problem with for example ./mtr --timer, caused by new version of "Getopt::Long"
 - Evaluating the "$opt" variable as a string, returns the name of the parameter
   to be modified instead of "Getopt::Long::Callback" which is the class name

In mtr.check_warnings, `text` was declares as type text, which is
64K, and when the server log grows larger than this, it would be
truncated, and then check_warnings was actually checking the 
error messages of a previous test and complain warnings.

This patch fixed the problem by change the type of `text` to
mediumtext, which is 16M.

mysql-test/include/mtr_warnings.sql:
  change the type of `text` to mediumtext

SIGABRT is sent to relevant processes after a timeout


client/mysqltest.cc:
  Fixed signal handlers to mysqltest actually dumps core
mysql-test/lib/My/CoreDump.pm:
  Added support for dbx
mysql-test/lib/My/SafeProcess.pm:
  Added dump_core to force process to dump core
mysql-test/lib/My/SafeProcess/safe_process.cc:
  Traps SIGABRT and sends this on to child
mysql-test/mysql-test-run.pl:
  When test times out, force core dumps on mysqltest and servers

Log output of mysqltest when running check-testcase together
with errput. Remove --silent option for mysqltest when running
check-testcase/check-warnings


mysql-test/mysql-test-run.pl:
  Log output of mysqltest when runinng check-testcase together with errput.
  Remove --silent option for mysqltest when running check-testcase/check-warnings

This does not bring any contents changes, it is purely
metadata which are affected.

Details:

Even within 5.0, most of these changesets did not cause
file contents changes, because they were backports done
for the "service pack" builds of 5.0.66sp1 and 5.0.72sp1.

The "real" changesets are also already present in 5.1,
so this upmerge doesn't change any contents.

The only "real" changeset in 5.0 was a fix of the shell
scripts used to configure bdb (BerkeleyDB).
As we completele removed bdb from the 5.1 sources already,
the affected files are not present in the 5.1 source tree,
so this changeset also does not cause any contents changes.

this should not happen.

This is not the final merge of that release build, but we need early
access to these tool fixes (use of "awk" in the BDB configuration).