Fix detection of debug binaries. If mysqld ouputs "debug xx" in the variable list it's a debug binary

 - add missing DBUG_RETURN
 - Change type of st_error->code to uint, that should be more than enough
   to hold the error numbers between 1000 and around 2000

Use replace_regex to mask the output of file_id= in "show binlog events" that depends on previous tests
What is this? replace_regex in 4.1! :)

Set slave_load_path to ../../var/tmp in version prior to 5.0 to be compatible with mysql-test-run.sh

Create the mysqld.spec file with a unique name in mysql-test dir, $opt_var_dir haven't been created yet

Add paths for ndb binaries
Some more backport issues

 -Add support for detecting version and features from mysqld binary
 - Autodetect netware
 - Disable some features not available below 5.0
 - Cleanup executable_setup to look for one executable at a time, only llok for the ones that are needed based on the selected testcases and settings

Add possibility to send warnings about suspicious commands in .test file to <result_file_name>.warnings file
Move detection of "parsing enabled" to after command has been read.
Cleanup parsing enabled/disabled

- Change con_host to ds_connection_name.str

 - ie. backport from 5.1
 - also update testcase error dected by new version

into  shellback.(none):/home/msvensson/mysql/mysql-4.1-maint

into  rama.(none):/home/jimw/my/mysql-4.1-21288

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-4.1-maint

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-4.1-maint

single file is a bad practice.  

into  maint2.mysql.com:/data/localhome/tsmith/bk/41

into  maint2.mysql.com:/data/localhome/tsmith/bk/41

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug04053/my41-bug04053

	event' from master"

Since there is no repeatable test case, and this is obviously wrong, this is
the most conservative change that might possibly work.  

The syscall  read()  wasn't checked for a negative return value for an
interrupted read.  The kernel  sys_read()  returns -EINTR, and the "library" 
layer maps that to return value of -1 and sets  errno  to EINTR.  It's 
impossible (on Linux) for  read()  to set errno EINTR without the return 
value being -1 .

So, if we're checking for EINTR behavior, we should not require that the
return value be zero.

into  maint2.mysql.com:/data/localhome/tsmith/bk/bfx/41

Bug#21432 Database/Table name limited to 64 bytes, not chars, problems with multi-byte

into  maint2.mysql.com:/data/localhome/tsmith/bk/41

into  maint1.mysql.com:/data/localhome/tsmith/bk/bugfixin/41

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

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