CRM-12517:  Drush: fix civicrm-enable-debug (& add civicrm-disable-debug)
civicrm.drush.inc - Set current user before executing civicrm_api
CRM-13047
CRM-13909 rebuild word replacement on drush clear cache
CRM-14184 - Extension system - Drush support for extension management
Merge pull request #124 from eileenmcnaughton/6.x-drush

6.x drush patch ports