Decode Gnus group names when browsing server group lists
* lisp/gnus/gnus-srvr.el (gnus-browse-foreign-server): The coding system for the nntp-server-buffer is 'binary; decode group names as 'utf-8-emacs.
* lisp/gnus/gnus-srvr.el (gnus-browse-foreign-server): The coding system for the nntp-server-buffer is 'binary; decode group names as 'utf-8-emacs.