* lisp/gnus.el (gnus-revision-number): Increment to 04.

* lisp/gnus.el (gnus-revision-number): Increment to 04.
* Makefile.in (xinfo, xinfo-ja): Make add-info-suffix, formatting, and make
remove-info-suffix.
* texi/Makefile.in (.texi): Don't specify the output filename when makeinfo
command is used.
(add-info-suffix, remove-info-suffix): New targets.
* lisp/dgnushack.el (dgnushack-add-info-suffix-maybe): New function. It will
be used for adding ".info" suffix to @setfilename line in each .texi files.
(dgnushack-texi-file-regexp): New constant.
(dgnushack-info-file-regexp): Add ".info" suffix.