Be safer about "%" in message formats

Be safer about "%" in message formats

* lisp/calc/calc-store.el (calc-copy-special-constant):
* lisp/net/rcirc.el (rcirc-handler-PART, rcirc-handler-KICK):
* lisp/org/org-agenda.el (org-agenda):
* lisp/org/org-clock.el (org-clock-out, org-clock-display):
* lisp/org/org.el (org-refile):
* lisp/progmodes/ada-xref.el (ada-goto-declaration):
* lisp/progmodes/idlwave.el (idlwave-scan-library-catalogs):
Don’t trust arbitrary strings to not contain "%" or "`" in
(message (concat STRING1 STRING2 ...)).