4 minor translation issues

Hi!
I stumbled upon some strings that won't get translated at the moment because the '@' is missing ('buddy' / 'buddylist' instead of '@buddy' / '@buddylist'):

- in 'function buddylist_pending_requested_deny_submit()' on line 987:
'"!user's request to be your buddy has been denied.",'
should be changed to
'"!user's request to be your @buddy has been denied.",'

- in 'buddylist_setmsg_received($thisuser)' on line 719:
'l(t('pending buddy requests'),'
to
'l(t('pending @buddy requests'),'

- in function 'theme_buddylist_form_edit_groups_table($form)' on line 1274:
'$headers = array(t('buddy'),'
to
'$headers = array(t('@buddy'),'

- in function 'buddylist_mail_approval_default()' on line 1668:
'Here's a link to your buddylist:'
to
'Here's a link to your @buddylist:'