Add sanity check that $opt_parallel > 0

MTR gives up if wanted port not available
Try next range if set to 'auto'
Also, use next number for additional threads if explicitly set

Error log gets truncated when mysqld is restarted by MTR

Problems with use of share/mysql dir
Explicitly look for "english" language file

Faulty logic in cleanup
Put test file into tmpdir, cleanup by removing tmpdir

TRUNCATE TABLE fails to replicate when stmt-based binlogging is not supported.

Correcting some tests that was failing in pushbuild as well as fixing result
file for some tests that are not executed in the default MTR run.

Post-merge fixes. Changes to some result sets.

based on NetBSD CVS as of 2009/02/06 20:09:00.

Perl crashes when MTR 2 tries to start v1
Replaced require with system()

The problem is that a unfiltered user query was being passed as
the format string parameter of sql_print_warning which later
performs printf-like formatting, leading to crashes if the user
query contains formatting instructions (ie: %s). Also, it was
using THD::query as the source of the user query, but this
variable is not meaningful in some situations -- in a delayed
insert, it points to the table name.

The solution is to pass the user query as a parameter for the
format string and use the function parameter query_arg as the
source of the user query.

added ignore-builtin-innodb option which disabled
initialization of builtin InnoDB plugin

- /tmp directory is not guaranteed to exist on Windows. 
Use the value of environment variable TEMP here

This involves just the tag, no file changes - they were all present before.

In 37553 we declared longlong results for
class Item_str_timefunc as per comments/docs,
but didn't add a method for that. And the
default just wasn't good enough for some
cases.

Changeset adds dedicated val_int() to class.