This introduces the predicate frame-initial-p, which uses
struct frame.output_method or struct terminal.type to detect
initial_terminal without relying on its name (bug#80629).
For some prior discussion, see:
https://lists.gnu.org/r/emacs-devel/2019-12/msg00480.html
https://lists.gnu.org/r/emacs-devel/2020-01/msg00120.html

* doc/lispref/frames.texi (Frames): Document frame-initial-p.
(Finding All Frames): Fix grammar.
* etc/NEWS (Lisp Changes in Emacs 31.1): Announce frame-initial-p.
* lisp/desktop.el (desktop--check-dont-save):
* lisp/emacs-lisp/debug.el (debug):
* lisp/frameset.el (frameset-restore):
* lisp/menu-bar.el (menu-bar-update-buffers):
* lisp/xt-mouse.el (turn-on-xterm-mouse-tracking-on-terminal):
Use frame-initial-p instead of checking the "initial_terminal" name.
* lisp/emacs-lisp/byte-opt.el: Mark frame-initial-p as error-free.

* src/pgtkterm.c (pgtk_focus_changed): Use IS_DAEMON in place of
Fdaemonp, thus also accepting a named daemon session.
* src/terminal.c (decode_tty_terminal): Clarify commentary.
(Fframe_initial_p): New function.
(syms_of_terminal): Expose it.
(init_initial_terminal): Update commentary now that
menu-bar-update-buffers uses frame-initial-p (bug#53740).

* test/lisp/xt-mouse-tests.el (with-xterm-mouse-mode): Simulate the
lack of an initial terminal by overriding frame-initial-p now
that turn-on-xterm-mouse-tracking-on-terminal uses it.
* test/src/terminal-tests.el: New file.

* lisp/subr.el (any): Rename from this ...
(member-if): ... to this.  All uses changed.
(any): New function alias.
* lisp/emacs-lisp/cl-seq.el (cl-member-if): Mark obsolete.
* lisp/obsolete/cl.el (member-if): Delete obsolete function
alias.
* doc/lispref/lists.texi (List Elements):
* doc/misc/cl.texi (Lists as Sets):
* etc/NEWS: Document the change.

This reverts commit 2bdf15f6d8293b21234cd236f39ce68f62e1f6c3.

There is no consensus for this change.

* lisp/subr.el (any): Rename from this ...
(member-if): ... to this.  All uses changed.
Implement '&key KEY-FN' for backwards compatibility.
(any): New function alias.
* lisp/emacs-lisp/cl-seq.el (cl-member-if): Make an alias for
'member-if'.
* lisp/obsolete/cl.el (member-if): Delete obsolete function
alias.
* doc/lispref/lists.texi (List Elements):
* doc/misc/cl.texi (Lists as Sets):
* etc/NEWS: Document the change.

When using vc-exec-after to parse program output, check that the
program didn't die to a signal or exit with an error exit code
before attempting the parse.  Continue to use plain
vc-run-delayed where we aren't parsing output, because in these
cases it doesn't matter to CODE if the output is incomplete.

* lisp/vc/vc-dispatcher.el (vc-exec-after): <process-status>:
Treat PROC dying to a signal the same as PROC exiting non-zero.

(vc-exec-after): <accept-process-output>: Restore making a
nonblocking call, for the case of vc-exec-after called from a
process sentinel.  diff-hl *does* require this.

(vc-exec-after): <OKSTATUS>: New parameter, replacing SUCCESS,
which never worked as documented.
* test/lisp/vc/vc-tests/vc-test-misc.el (vc-test-exec-after-3):
Test it.

(vc-run-delayed-success): New macro.
* lisp/vc/vc-git.el (vc-git-dir-status-goto-stage):
* lisp/vc/vc-hg.el (vc-hg-dir-status-files):
* lisp/vc/vc.el (vc-pull-and-push): Use it.

* lisp/obsolete/vc-arch.el (vc-exec-after):
* lisp/obsolete/vc-mtn.el (vc-exec-after):
* lisp/vc/vc-bzr.el (vc-exec-after):
* lisp/vc/vc-cvs.el (vc-exec-after):
* lisp/vc/vc-git.el (vc-exec-after):
* lisp/vc/vc-hg.el (vc-exec-after):
* lisp/vc/vc-svn.el (vc-exec-after): Update declarations.

Frames created when Emacs is running as a daemon may not have the
"client" frame parameter set, e.g., when:

1. Created from the user's init file.
2. Created via "emacsclient -e" (e.g., "emacsclient -e '(make-frame)'").

The "client" parameter simply indicates that the frame was created by
emacsclient directly (or recursively from another emacsclient frame).

Instead, this commit checks if (a) Emacs is running as a daemon and (b)
the target frame is the "terminal frame".  When run as a daemon, Emacs's
terminal frame is always the daemon's initial frame.

* lisp/desktop.el (desktop-clear):
(desktop-restoring-frameset-p):
* lisp/display-fill-column-indicator.el
(display-fill-column-indicator--turn-on):
* lisp/frame.el (frame-notice-user-settings):
* lisp/obsolete/linum.el (linum-on):
* lisp/progmodes/flymake.el (flymake-start):
* lisp/tab-bar.el (tab-bar--update-tab-bar-lines): Fix the "is this the
initial daemon-frame" checks.  (Bug#79686)

It never was very useful to begin with, produces lots of false positives,
and the byte-compiler has long eclipsed it in warning quality.

* lisp/emacs-lisp/elint.el: Move this file...
* lisp/obsolete/elint.el: ...here, and declare obsolete.
(elint-file, elint-directory, elint-current-buffer, elint-defun):
Declare obsolete.
(elint--file): Split from elint-file to avoid warning.
* lisp/progmodes/elisp-mode.el (emacs-lisp-mode-menu):
Remove elint menu entries.
* etc/NEWS: Announce

* lisp/vc/vc-dav.el: Move from here ...
* lisp/obsolete/vc-dav.el: ... to here (bug#77626).
Add Obsolete-since header.
* etc/NEWS: Announce the obsoletion.

* lisp/dired.el (dired-advertised-find-file):
* lisp/simple.el (advertised-undo):
* lisp/wid-edit.el (advertised-widget-backward): Remove variable
aliases obsolete since Emacs 23.2.  They are replaced by
':advertised-binding' properties.
* lisp/arc-mode.el (archive-mode-map):
* lisp/dired.el (dired-mode-map):
* lisp/obsolete/landmark.el (landmark-mode-map):
* lisp/play/decipher.el (decipher-mode-map):
* lisp/play/gomoku.el (gomoku-mode-map):
* lisp/proced.el (proced-mode-map): Don't bind above removed commands.