civicrm/civicrm-core — pull request #3261 by atif-shaikh (2014-05-14 14:34:48+00:00)
Title: Core Bug related to foreign key referencing not defined for civicrm_entity_tag table

While working on Webtest (WebTest_Contact_MergeContactsTest.testIndividualAdd) I encountered an issue related to core.
While Merging contacts if the contact consisted of Tags then it was not displayed to able to merge to another contact.
On checking i found that there was no referencing for civicrm_entity_tag table for column entity_id and therefore the issue.