Move org-mew.el, org-vm.el, org-w3m.el, org-wl.el to contrib/.

* org.el (org-modules): Do not include org-mew.el, org-vm.el,
org-w3m.el, org-wl.el as these files are now part of contrib/.

* org-w3m.el:
* org-vm.el:
* org-w3m.el:
* org-wl.el: Move to contrib/.

The purpose behind this change is to prepare a future split between
org-mode.git and org-contrib.git: org-mode.git will contain all files
that are directly relevant to GNU Emacs, while org-contrib.git will
contain files that are more peripheral and/or from authors who cannot
assign their copyright to the FSF.

This is *not* a way do downgrade those files, it is a way to prepare
org-contrib.org so that it gets more attention and more contributors,
thanks to the fact that there is no legal barrier to contribute to it.

contrib/lisp/org-mew.el

@@ -6,7 +6,7 @@
 ;; Keywords: outlines, hypermedia, calendar, wp
 ;; Homepage: http://orgmode.org
 
-;; This file is part of GNU Emacs.
+;; This file is not part of GNU Emacs.
 
 ;; GNU Emacs is free software: you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by

contrib/lisp/org-vm.el

@@ -10,7 +10,7 @@
 ;; by Konrad Hinsen <konrad dot hinsen at fastmail dot net>
 ;; Requires VM 8.2.0a or later.
 ;;
-;; This file is part of GNU Emacs.
+;; This file is not part of GNU Emacs.
 ;;
 ;; GNU Emacs is free software: you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by

contrib/lisp/org-w3m.el

@@ -6,7 +6,7 @@
 ;; Keywords: outlines, hypermedia, calendar, wp
 ;; Homepage: http://orgmode.org
 ;;
-;; This file is part of GNU Emacs.
+;; This file is not part of GNU Emacs.
 ;;
 ;; GNU Emacs is free software: you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by

contrib/lisp/org-wl.el

@@ -7,7 +7,7 @@
 ;; Keywords: outlines, hypermedia, calendar, wp
 ;; Homepage: http://orgmode.org
 ;;
-;; This file is part of GNU Emacs.
+;; This file is not part of GNU Emacs.
 ;;
 ;; GNU Emacs is free software: you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by

lisp/org.el

@@ -330,7 +330,7 @@ When MESSAGE is non-nil, display a message with the version."
   (when (featurep 'org)
     (org-load-modules-maybe 'force)))
 
-(defcustom org-modules '(org-bbdb org-bibtex org-docview org-gnus org-info org-irc org-mew org-mhe org-rmail org-vm org-w3m org-wl)
+(defcustom org-modules '(org-bbdb org-bibtex org-docview org-gnus org-info org-irc org-mhe org-rmail)
   "Modules that should always be loaded together with org.el.
 
 If a description starts with <C>, the file is not part of Emacs
@@ -361,15 +361,15 @@ For export specific modules, see also `org-export-backends'."
 	(const :tag "   inlinetask:        Tasks independent of outline hierarchy" org-inlinetask)
 	(const :tag "   irc:               Links to IRC/ERC chat sessions" org-irc)
 	(const :tag "   mac-message:       Links to messages in Apple Mail" org-mac-message)
-	(const :tag "   mew                Links to Mew folders/messages" org-mew)
 	(const :tag "   mhe:               Links to MHE folders/messages" org-mhe)
 	(const :tag "   protocol:          Intercept calls from emacsclient" org-protocol)
 	(const :tag "   rmail:             Links to RMAIL folders/messages" org-rmail)
-	(const :tag "   vm:                Links to VM folders/messages" org-vm)
-	(const :tag "   wl:                Links to Wanderlust folders/messages" org-wl)
-	(const :tag "   w3m:               Special cut/paste from w3m to Org-mode." org-w3m)
 	(const :tag "   mouse:             Additional mouse support" org-mouse)
 
+	(const :tag "C  vm:                Links to VM folders/messages" org-vm)
+	(const :tag "C  wl:                Links to Wanderlust folders/messages" org-wl)
+	(const :tag "C  w3m:               Special cut/paste from w3m to Org-mode." org-w3m)
+	(const :tag "C  mew:               Links to Mew folders/messages" org-mew)
 	(const :tag "C  annotate-file:     Annotate a file with org syntax" org-annotate-file)
 	(const :tag "C  bookmark:          Org-mode links to bookmarks" org-bookmark)
 	(const :tag "C  checklist:         Extra functions for checklists in repeated tasks" org-checklist)