[PATCH] add 'Japanese Postcard' paper size to both Paper format and Print dialog

[Takeshi Abe]

Hi,

I would like to add an option for the paper size of 'Japanese Postcard'
[1] to combo boxes such as Paper format and Print dialog.
The attached patch against master seems sufficient for that because its
actual dimension is already defined in the code base.
But I think it would be controversial to have extra paper sizes which no
ones but only in a few locale use often.
Any thought?

[1] http://msdn.microsoft.com/en-us/library/windows/desktop/dd319099(v=vs.85).aspx

Cheers,
-- Takeshi Abe