* lisp/emacs-lisp/package.el: Include obsolete packages from archives.

* 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.