bug#51377: Automatically exit server when it has no remaining clients

[Jim Porter]

On 10/24/2021 12:39 PM, Jim Porter wrote:
> Next, I updated `server-save-buffers-kill-terminal' to check if the 
> server is a lazy daemon and if the current client is the last one: if 
> so, it calls `save-buffers-kill-emacs', which then calls an improved 
> `server-kill-emacs-query-function' that knows to avoid prompting 
> unnecessarily when this is the last client.

I amended the third patch (attached) to account for this change in 
`handle-delete-frame'. This ensures that if you delete the last 
(non-daemon) frame using this method, it calls `save-buffers-kill-emacs' 
to ask the relevant questions.

0003-When-killing-the-last-client-attached-to-a-lazy-daem.patch
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