bug#7390: 24.0.50; pos-col-row gives incorrect row

[Eli Zaretskii]

> From: "Drew Adams" <drew.adams@oracle.com>
> Cc: <7390@debbugs.gnu.org>
> Date: Sat, 13 Nov 2010 13:38:01 -0800
> 
> But what do we want "pixel" position to mean? Both (1) a position within the
> text area and (2) a position overall (including things like scroll bars and
> header lines can be useful.

You already have (2) in the mouse event itself.  The posn-* functions
are about (1).