Fix content decoding in gnus-read-ephemeral-bug-group

* gnus-group.el (gnus-read-ephemeral-bug-group): Bind
coding-system-for-read and coding-system-for-write only around
with-temp-file, and make buffer unibyte.  Don't write temp file twice.
* net/tramp-sh.el (tramp-send-command-and-read): New optional arg MARKER.
(tramp-get-remote-path): Use it.
Merge branch 'emacs-24' of git.sv.gnu.org:/srv/git/emacs into emacs-24

Conflicts:
	lisp/ChangeLog
* net/tramp-sh.el (tramp-send-command-and-read): New optional arg MARKER.
(tramp-get-remote-path): Use it.
Merge branch 'emacs-24' of git.sv.gnu.org:/srv/git/emacs into emacs-24

Conflicts:
	lisp/ChangeLog