[cairo] Another 1.6 item

[Behdad Esfahbod]

So we've talked about it numerous times before.  I want to make it
happen now.  I'm going to change cairo_get_current_point() to return
cairo_status_t instead of void.  The interesting part (other than the
case that if cr is already in error) is returning
CAIRO_STATUS_NO_CURRENT_POINT, which is sourly missing from the API.

-- 
behdad
http://behdad.org/

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