bug#35307: sql.el - Product "ms" is missing "prompt-cont-regexp"

[Eli Zaretskii <eliz@gnu.org>]

> From: Sebastián Monía
> 	<seb.hoagie@outlook.com>
> Date: Wed, 17 Apr 2019 17:10:22 +0000
> 
> I've noticed this in the past but for reason didn't notice I should report it until I downloaded the Emacs 27 Alpha
> recently and had to fix it again.
> The configuration for MS SQL Server in sql.el is missing "prompt-cont-regexp" and thus breaks when you
> launch SQLi.
> 
> All that is needed is the following:
> 
> (ms
>      :name "Microsoft"
>      :font-lock sql-mode-ms-font-lock-keywords
>      :sqli-program sql-ms-program
>      :sqli-options sql-ms-options
>      :sqli-login sql-ms-login-params
>      :sqli-comint-func sql-comint-ms
>      :prompt-regexp "^[0-9]*>"
>       ;; below the new line
>      :prompt-cont-regexp "^[0-9]*>"
>       ;; above the new line
>      :prompt-length 5
>      :syntax-alist ((?@ . "_"))
>      :terminator ("^go" . "go"))

Thanks.  Michael, could you please look into this?