if --skip-grant-tables specified.

The problem is that there is a check that prevents creating a definer
with empty host name.

In --skip-grant-tables mode this check prevents the user from creating a
trigger/view without explicitly specifying its definer. This happens, because
in --skip-grant-tables mode CURRENT_USER is ''@''. According to Sanja this
check was implemented intentionally.

However, according to the MySQL manual it is possible to specify empty host
name (as well as empty user name). Moreover, the behaviour for stored routines
is different in this aspect -- we allow them to be created with implicit
definer.

Based on this, we believe it is OK to change the behaviour for views to be
similar with the behaviour for stored routines.

The idea of the fix is to extend support of non-SUID triggers for backward
compatibility. Formerly non-SUID triggers were appeared when "new" server
is being started against "old" database. Now, they are also created when
"new" slave receives updates from "old" master.

bug #13525 "Rename table does not keep info of triggers".

Now we use MYSQLTEST_VARDIR in order to be able to run this test in different
vardir. Also improved cleanup after the test.

into  mysql.com:/home/dlenev/src/mysql-5.0-bg13525

into  mysql.com:/home/dlenev/src/mysql-5.0-bg13525

into  selena.:H:/MYSQL/src/#15943-mysql-5.0

into  mysql.com:/home/psergey/mysql-5.0-bug17314-push

 - Set FD_SETSIZE before including "sys/select.h"

into mysql.com:/home/psergey/mysql-5.0-bug17314

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

into  mysql.com:/home/dlenev/src/mysql-5.0-bg13525

after merging fix for it with main tree.

into  mysql.com:/home/dlenev/src/mysql-5.0-bg13525

into  mysql.com:/home/my/mysql-5.0

- Added empty constructors and virtual destructors to many classes and structs
- Removed some usage of the offsetof() macro to instead use C++ class pointers

into  mysql.com:/home/my/mysql-5.0

Let us transfer triggers associated with table when we rename it (but only if
we are not changing database to which table belongs, in the latter case we will
emit error).

into  mysql.com:/home/my/mysql-5.0

(Needed for "list of pushes" web page and autopush)

into moonbone.local:/work/17530-bug-5.0-mysql

(Backported from mysql-5.1-new)

into moonbone.local:/work/17530-bug-5.0-mysql

into  mysql.com:/opt/local/work/mysql-5.0-runtime

into  mysql.com:/opt/local/work/mysql-5.0-runtime

fixed in 5.0).
A post-review fix (Bug#13134)

  Rearrange out of order options in option struct.

into  snake-hub.snake.net:/src/extern/MySQL/bk/mysql-5.0

  Fix out of order entries in option struct.

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