gnu: Add emacs-irfc.

* gnu/packages/emacs.scm (emacs-irfc): New public variable.

gnu/packages/emacs.scm

@@ -9972,3 +9972,22 @@ bookmarks and history.")
       (synopsis "Emacs minor-mode for Stumpwm")
       (description "Emacs minor-mode for Stumpwm")
       (license license:gpl3+))))
+
+(define-public emacs-irfc
+  (package
+    (name "emacs-irfc")
+    (version "20130824.507")
+    (source
+     (origin
+       (method url-fetch)
+       (uri "https://www.emacswiki.org/emacs/download/irfc.el")
+       (file-name (string-append "irfc-" version ".el"))
+       (sha256
+        (base32
+         "197ybqwbj8qjh2p9pkf5mvqnrkpcgmv8c5s2gvl6msyrabk0mnca"))))
+    (build-system emacs-build-system)
+    (home-page "https://www.emacswiki.org/emacs/download/irfc.el")
+    (synopsis "Interface for IETF RFC document")
+    (description
+     "This package provides an Emacs interface for IETF RFC document.")
+    (license license:gpl3+)))