drush-ops/drush — pull request #536 by kostajh (2014-03-19 00:58:20+00:00)
Title: Attempt to bootstrap in drush_sql_get_class()

I found that the `drush @example.dev sql-query` and `drush @example.dev sqlc` commands did not work with a Drupal 6 site unless this bit of code was added in. `drush @example.dev sql-conf` did work, which clued me in to this fix.