[gh-258] Merging from testing into staging

README-UNL.txt

sites/all/modules/drush/README.txt

sites/all/modules/drush/commands/core/archive.drush.inc

sites/all/modules/drush/commands/core/cache.drush.inc

sites/all/modules/drush/commands/core/clear.cache.inc

sites/all/modules/drush/commands/core/core.drush.inc

sites/all/modules/drush/commands/core/docs.drush.inc

sites/all/modules/drush/commands/core/drupal/batch.inc

sites/all/modules/drush/commands/core/drupal/environment.inc

.../all/modules/drush/commands/core/drupal/environment_5.inc

.../all/modules/drush/commands/core/drupal/environment_6.inc

...s/all/modules/drush/commands/core/drupal/site_install.inc

...all/modules/drush/commands/core/drupal/site_install_6.inc

sites/all/modules/drush/commands/core/drupal/update.inc

sites/all/modules/drush/commands/core/drupal/update_5.inc

sites/all/modules/drush/commands/core/drupal/update_6.inc

sites/all/modules/drush/commands/core/field.drush.inc

sites/all/modules/drush/commands/core/help.drush.inc

sites/all/modules/drush/commands/core/image.drush.inc

sites/all/modules/drush/commands/core/rsync.core.inc