into  mysql.com:/usr/home/ram/work/bug20732/my50-bug20732

We miss some records sometimes using RANGE method if we have
partial key segments.
Example:
  Create table t1(a char(2), key(a(1)));
  insert into t1 values ('a'), ('xx');
  select a from t1 where a > 'x';
We call index_read() passing 'x' key and HA_READ_AFTER_KEY flag
in the handler::read_range_first() wich is wrong because we have
a partial key segment for the field and might miss records like 'xx'.

Fix: don't use open segments in such a case.

Remove table engine qualification where it's unnecessary.

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

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

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

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

mysqltest.test on Solaris and Mac. write_file produced nice files with all zeroes.

into  mysql.com:/usr/home/ram/work/bug23254/my41-bug23254

into  mysql.com:/usr/home/ram/work/bug23254/my50-bug23254

into  mysql.com:/usr/home/ram/work/bug23254/my50-bug23254

We don't set null_value to 0 in the Item_func_compress::val_str() for 
not-NULL results.

into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug14262/my50-bug14262

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.0-real

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-4.1-bug9678

Now also detects "source nnnn;" command, previous version only detected
"--source"

Improve function that finds the reason why test was skipped, the old version only looked at the ast line, but there might be some additional debug info there so it's better to scan the whole file. 
There should be only one line that says "reason: <reason>"

This will hopefully avoiid annoying crashes when running with --debug
Fix warnings  from the above in mysqltest.c

with DBUG_PRINT format specifiers

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

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

into  polly.local:/home/kaa/src/maint/mysql-5.0-maint

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

into  polly.local:/tmp/maint/bug22728/my50-bug22728

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

Fix warning about value from "*ptr++" not being used. Changed it to ptr++