incorrect user name used on cancel relationship request page

url: http://www.example.com/relationships/$uid/requested/cancel/$uid2?destination=relationships%2F5%2Frequests

The user's own name (vs. the requestee's name) is displayed on the cancel relationship request page. This is happening b/c user_relationships_pending_requested() is used to generate the cancel, approve and disapprove forms and the code always uses $relationship->requester. That doesn't work b/c in the former case, user == requester and in the latter cases, user == requestee. We need to put in some logic to set the value appropriately depending on case.