Fix some confusion with ‘format’

Fix some confusion with ‘format’

* lisp/allout-widgets.el (allout-widgets-before-change-handler)
(allout-graphics-modification-handler):
Protect arbitrary string in a format context with "%s" format.
* lisp/avoid.el:
* lisp/cedet/semantic/bovine/scm.el: Fix comment.
* lisp/calendar/icalendar.el (icalendar--convert-sexp-to-ical):
* lisp/erc/erc-button.el (erc-button-beats-to-time):
* lisp/gnus/message.el (message-send-form-letter):
* lisp/org/ob-core.el (org-babel-check-evaluate)
(org-babel-confirm-evaluate):
* lisp/org/ob-fortran.el (org-babel-fortran-var-to-fortran):
* lisp/org/ox-latex.el (org-latex-compile):
* lisp/org/ox-man.el (org-man-compile):
* lisp/org/ox-odt.el (org-odt-template):
* lisp/org/ox-texinfo.el (org-texinfo-compile):
* lisp/progmodes/prolog.el (prolog-help-info)
(prolog-view-predspec):
* lisp/progmodes/ruby-mode.el (ruby-parse-partial):
* lisp/progmodes/verilog-mode.el (verilog-showscopes):
* lisp/textmodes/rst.el (rst-replace-lines):
Change (message (format ...)) to (message ...), and likewise
for ‘error’.  This lessens the probability of confusion when the
output of ‘format’ contains ‘%’.