Some documentation for signing of packages

* doc/emacs/package.texi (Package Menu, Package Installation):
Mention signed packages.

* doc/lispref/package.texi (Package Archives): Mention signing packages.

* lisp/emacs-lisp/package.el (package-check-signature)
(package-unsigned-archives): Doc fixes.

* etc/NEWS: Related edits.

2 files changed, 12 insertions, 2 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 6bb2147595d..1280e39ec27 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2014-06-05  Glenn Morris  <rgm@gnu.org>
+
+        * emacs-lisp/package.el (package-check-signature)
+        (package-unsigned-archives): Doc fixes.
+
 2014-06-03  Martin Rudalics  <rudalics@gmx.at>
 
         * window.el (display-buffer-use-some-window): Don't make window
diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index 028c57da19c..57a5429f0a1 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -292,7 +292,12 @@ contrast, `package-user-dir' contains packages for personal use."
   :version "24.1")
 
 (defcustom package-check-signature 'allow-unsigned
-  "Whether to check package signatures when installing."
+  "Non-nil means to check package signatures when installing.
+The value `allow-unsigned' means to still install a package even if
+it is unsigned.
+
+This also applies to the \"archive-contents\" file that lists the
+contents of the archive."
   :type '(choice (const nil :tag "Never")
                  (const allow-unsigned :tag "Allow unsigned")
                  (const t :tag "Check always"))
@@ -301,7 +306,7 @@ contrast, `package-user-dir' contains packages for personal use."
   :version "24.4")
 
 (defcustom package-unsigned-archives nil
-  "A list of archives which do not use package signature."
+  "List of archives where we do not check for package signatures."
   :type '(repeat (string :tag "Archive name"))
   :risky t
   :group 'package