* lisp/emacs-lisp/package.el: Define custom faces

* lisp/emacs-lisp/package.el: Define custom faces

(package-name-face, package-description-face)
(package-status-built-in-face, package-status-external-face)
(package-status-available-face, package-status-new-face)
(package-status-held-face, package-status-disabled-face)
(package-status-installed-face, package-status-dependency-face)
(package-status-unsigned-face, package-status-incompat-face)
(package-status-avail-obso-face): New faces.
(package-menu--print-info-simple): Use them.