[PATCH modular] release.sh: Generate error for missing arguments

[Dan Nicholson]

On Sun, Mar 13, 2011 at 3:35 AM, Dirk Wallenstein <halsmit at t-online.de> wrote:
> All three arguments are required.  Otherwise git-rev-list will abort the
> script silently.
>
> Signed-off-by: Dirk Wallenstein <halsmit at t-online.de>

Reviewed-by: Dan Nicholson <dbn.lists at gmail.com>