user32/tests: Add test for SetFocus() (with few todo)(Try 2).

[Sergey Guralnik]

I've sent next patch more than month ago, and have no comments about 
it.

 From 57adc6991431cd765dcdb97082263db834e4b533 Mon Sep 17 00:00:00 2001
 From: Sergey Guralnik <serhio at etersoft.ru>
Date: Thu, 9 Aug 2012 17:12:56 +0400
Subject: user32/tests: Add test for SetFocus() (with few todo)(Try 2).

Is anything wrong with this one?

-- 
Sergey