* lisp/finder.el (finder-goto-xref): Move from here...
* lisp/emacs-lisp/package.el (package--finder-goto-xref): ...to
here.  Make the old name into an obsolete function alias.
(package--finder-xref): New button type.
(package--describe-add-library-links): Factor out new function...
* lisp/finder.el (finder-commentary): ...from here.
(describe-package-1): Call above new function.  This fixes an
issue where commentaries reached via 'finder-list-keywords' did
not have links.  (Bug#10814)

* lisp/finder.el (finder-commentary): Adjust usage.

* lisp/emacs-lisp/find-func.el (find-function-source-path): Made
into obsolete alias (bug#50508).
(find-library-source-path): New name.
(find-library-name, find-library, find-function-noselect)
(find-variable-noselect, find-definition-noselect): Adjust usage
and update doc strings.

0aa0410372 (origin/emacs-27, emacs-27) Fix "Finder" description for m...

* lisp/finder.el (finder-compile-keywords):  Now that 'version' is
set for more files, it is no longer necessary to check that we have
a version when picking the file from which to take the description.
Doing so caused built-in packages (where the version is known) to have
their package description taken from the last .el file that matched the
file name pattern, usually the last source file in the sub-directory.

This bug was introduced in July 2019 and first released in Emacs 27.1.

Thanks to Michael Albinus for reviewing this patch.

* lisp/finder.el (finder-mouse-select): Don't tag for finder-mode.

* lisp/finder.el: Use lexical-binding.
(finder-mode-map, finder-compile-keywords): Remove unused lexical
variables.

* lisp/finder.el (finder-mode-map): Move menu definition from
here...
(finder-mode-menu): ...to here, and rewrite using
easy-menu-define.

Run "TZ=UTC0 admin/update-copyright".

Run "TZ=UTC0 admin/update-copyright $(git ls-files)".