Do not enable 'package-autosuggest-mode' by default

As the feature is intrusive and can slow down startup time it is
safer to disable the feature by default.

* doc/emacs/package.texi (Package Installation): Explicitly
mention the minor mode in the manual.
* etc/NEWS: Document it here as well.
* lisp/emacs-lisp/package.el (package-autosuggest-mode): Change
default value to nil and autoload it.

1 files changed, 6 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index a808cc30b58..dcbe75b6b8b 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -666,6 +666,12 @@ the directory into which the repository was cloned.
 Using a built-in database of package suggestions from ELPA, this command
 will install viable packages if no specific major mode is available.
 
++++
+*** New minor mode 'package-autosuggest-mode'
+When enabled, this displays a hint in the mode line indicating the
+availability of a suggested package.  You can customise the presentation
+of these hints using 'package-autosuggest-style'.
+
 
 * New Modes and Packages in Emacs 31.1