* lisp/emacs-lisp/package.el: Include obsolete packages from archives.
Use lexical-binding. (package-archive-contents): Change format; include obsolete packages. (package-desc): Use `dir' to mark builtin packages. (package--from-builtin): Set the `dir' field to `builtin'. (generated-autoload-file, version-control): Declare. (package-compute-transaction): Change first arg and return value to be lists of package-descs. Adjust to new package-archive-contents format. (package--add-to-archive-contents): Adjust to new package-archive-contents format. (package-download-transaction): Arg is now a list of package-descs. (package-install): If `pkg' is a package name, pass it as a requirement, so it is subject to the usual (e.g. disabled) checks. (describe-package): Accept package-desc as well. (describe-package-1): Describe a specific package-desc. Add links to other package-descs for the same package name. (package-menu-describe-package): Pass the actual package-desc. (package-menu-mode): Add to tabulated-list-revert-hook so revert-buffer works correctly. (package-desc-status): New function. (package-menu--refresh): New function, extracted from package-menu--generate. (package-menu--generate): Use it. (package-delete): Update package-alist. (package-menu-execute): Don't call package-initialize. * lisp/progmodes/idlw-toolbar.el, lisp/progmodes/idlw-shell.el, lisp/progmodes/idlw-help.el, lisp/progmodes/idlw-complete-structtag.el, lisp/progmodes/ebnf-yac.el, lisp/progmodes/ebnf-otz.el, lisp/progmodes/ebnf-iso.el, lisp/progmodes/ebnf-ebx.el, lisp/progmodes/ebnf-dtd.el, lisp/progmodes/ebnf-bnf.el, lisp/progmodes/ebnf-abn.el, lisp/emacs-lisp/package-x.el, lisp/emacs-lisp/cl-seq.el, lisp/emacs-lisp/cl-macs.el lisp/cedet/data-debug.el, lisp/cedet/cedet-idutils.el: Neuter the "Version:" header.
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