Issues with `t()` in Entity Plus

[argiepiano]

After using the Potx module to extract translatable strings, I found the following issues:

• The first parameter to t() should be a literal string. There should be no variables, concatenation, constants or other non-literal strings there. At t($language->name) in modules/callbacks.inc on line 448
• The first two watchdog() parameters should be literal strings. There should be no variables, concatenation, constants or even a t() call there. At watchdog($entity_type,'Missing property callback %callback.',array('%callback'=>$callback),WATCHDOG_ERROR) in modules/field.info.inc on line 34
• The first parameter to t() should be a literal string. There should be no variables, concatenation, constants or other non-literal strings there. At t('Note: This is a multi-valued relationship, which is currently not supported. '.'Only the first related entity will be shown.') in views/handlers/entity_plus_views_handler_relationship.inc on line 32