_userpoints_transaction returns moderation status instead of function status

In the update from 1.56 to 1.57 the function _userpoints_transaction was changed from "return TRUE always if the function exits at the bottom" to "return the $params['status']". In fact, the $params['status'] is used to hold moderation status inside of this function so we return the moderation setting - not very useful. If a site has moderation disabled (that is set to accept all) then userpoints_userpointsapi thinks that this function has failed even though it finished just fine.