Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November.  Change these FTP URLs to https://ftp.gnu.org
instead.  Make similar changes for URLs to other organizations moving
away from FTP.  Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.

Run admin/update-copyright.

Run admin/update-copyright.

* lisp/calendar/todo-mode.el (todo-mode):
* lisp/desktop.el (desktop-save-mode):
* lisp/edmacro.el (edit-kbd-macro):
* lisp/emacs-lisp/package.el (package-menu-execute):
* lisp/emulation/viper-cmd.el (viper-ask-level):
* lisp/emulation/viper-init.el (viper-expert-level):
* lisp/filesets.el (filesets-add-buffer):
* lisp/follow.el (follow-mode):
* lisp/gnus/auth-source.el (auth-sources):
* lisp/international/ogonek.el (ogonek-informacja)
(ogonek-information):
* lisp/net/tramp.el (tramp-process-actions):
* lisp/org/org-gnus.el (org-gnus-no-new-news):
* lisp/org/org.el (org-ellipsis):
* lisp/progmodes/python.el (python-shell-get-process-or-error):
* lisp/progmodes/vhdl-mode.el (vhdl-mode):
* lisp/server.el (server-start):
* lisp/type-break.el (type-break-noninteractive-query):
* lisp/userlock.el (ask-user-about-supersession-help):
* lisp/whitespace.el (whitespace-report-region):
Prefer (substitute-command-keys "`\\[foo-command]'")
to "`M-x foo-command'" in docstrings and the like.

* lisp/emacs-lisp/cl-lib.el: Partial revert of "2015-04-05 Rationalize
use of c[ad]+r", so as to keep the "cl-" prefix on all
cl-lib definitions.

Also expunge eudc-c[ad]+r.

* subr.el (internal--compiler-macro-cXXr): "New" function, copied
from cl--compiler-macro-cXXr.
(caar, cadr, cdar, cddr): Change from defsubsts to defuns with
the above compiler-macro.

* net/eudc.el (eudc-cadr, eudc-cdar, eudc-caar, eudc-cdaar): Remove.

* emacs-lisp/cl.el (Top level dolist doing defaliases): Remove
caaar, etc., from list of new alias functions.

* emacs-lisp/cl-lib.el (cl-caaar, etc): Rename to caaar, etc.
(gen-cXXr--rawname, gen-cXXr-all-cl-aliases): New function/macro
which generate obsolete cl- aliases for caaar, etc.  Invoke them.

* desktop.el:
* edmacro.el:
* emacs-lisp/cl-macs.el:
* frameset.el:
* ibuffer.el:
* mail/footnote.el:
* net/dbus.el:
* net/eudc-export.el:
* net/eudc.el:
* net/eudcb-ph.el:
* net/rcirc.el:
* net/secrets.el:
* play/5x5.el:
* play/decipher.el:
* play/hanoi.el:
* progmodes/hideif.el:
* ses.el: Replace cl-caaar, eudc-cadr, etc. with caaar and cadr, etc.

Run admin/update-copyright.

* lisp/doc-view.el: Require cl-lib at runtime too.
(doc-view-remove-if): Remove.
(doc-view-search-next-match, doc-view-search-previous-match):
Use cl-remove-if.

* lisp/edmacro.el: Require cl-lib at runtime too.
(edmacro-format-keys, edmacro-parse-keys): Use cl-mismatch, cl-subseq.
(edmacro-mismatch, edmacro-subseq): Remove.

* lisp/filesets.el: Comments.

* lisp/shadowfile.el: Require cl-lib.
(shadow-remove-if): Remove.
(shadow-set-cluster, shadow-shadows-of-1, shadow-remove-from-todo):
Use cl-remove-if.

* lisp/wid-edit.el: Require cl-lib.
(widget-choose): Use cl-remove-if.
(widget-remove-if): Remove.

* lisp/progmodes/ebrowse.el: Require cl-lib at runtime too.
(ebrowse-delete-if-not): Remove.
(ebrowse-browser-buffer-list, ebrowse-member-buffer-list)
(ebrowse-tree-buffer-list, ebrowse-same-tree-member-buffer-list):
Use cl-delete-if-not.