CRM-15270 - exclude more tables from the log table creation method.

Attempting to create log versions of these tables results in errors.

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* CRM-15270: Enabling logging result in database error
  https://issues.civicrm.org/jira/browse/CRM-15270

how about cleaning this up (i.e. deleing all the ones that reference _temp_ and using)

seems more future proof:

$this->tables = preg_grep('/_temp_/', $this->tables, PREG_GREP_INVERT);