Audit the buttons code

[Robert Shearman]

Dmitry Timoshkov wrote:

>"Dimitrie O. Paun" <dpaun at rogers.com> wrote:
>  
>
>>+ * This code was audited for completeness against the documented features
>>+ * of Comctl32.dll version 6.0 on Oct. 3, 2004, by Dimitrie O. Paun.
>>    
>>
>
>"Button" is a built-in user32 control and has nothing to do with comctl32
>at all. Same for all other controls in the dlls/user/ subdirectory.
>  
>

That was true up until Windows XP. All of the built-in user32 controls 
have now been copied into comctl32 and extended.

Rob