[PATCH] Rename keypad to pinpad

[NIIBE Yutaka]

On 2013-02-07 at 10:24 +0900, NIIBE Yutaka wrote:
> This is the change to rename "keypad" to "pinpad".  It's not only
> implementation (functions and constants), but also commands in
> agent<-> scdaemon protocol and options.
> 
> I'll apply this to both of master and 2.0.

For both branches, I applied this patch and updated NEWS entries.

I realized that this patch introduces changes of PO files, since the
patch touches messages to user.

I'm talking about 2.0 branch.

I don't know the development/communication process for translations,
how should I notify translators?  Well, I will update po/ja.po later.
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