Add `utf8' and `UTF8' as aliases for the `utf-8' coding system.

lisp/ChangeLog

+2008-10-15  Teodor Zlatanov  <tzz@lifelogs.com>
+
+	* international/mule-conf.el: Add `utf8' and `UTF8' as
+	aliases for the `utf-8' coding system.
+
 2008-10-15  Juanma Barranquero  <lekktu@gmail.com>
 	* find-file.el (ff-get-file): Doc fix.

lisp/international/mule-conf.el

@@ -1274,6 +1274,9 @@ is treated as a character."
   :bom '(utf-8-with-signature . utf-8))
 
 (define-coding-system-alias 'mule-utf-8 'utf-8)
+;; common aliases
+(define-coding-system-alias 'utf8 'utf-8)
+(define-coding-system-alias 'UTF8 'utf-8)
 
 (define-coding-system 'utf-8-emacs
   "Support for all Emacs characters (including non-Unicode characters)."