gdi: [2 of 3] Add header for GetCharABCWidthI

[Jeff Latimer]

Mike McCormack wrote:

>
> Jeff L wrote:
>
>> I have repackaged this as package.
>
>
> Please don't split patches that depend on each other to make Wine 
> compile and work correctly, or add dead code.
>
> The point of having small patches is to make Wine easier to regression 
> test, so we want things to work between every commit.
>
>
Mike, take the point that everyone has pointed out about dead code and 
c99.  An accident of enthusiasm of Easter.  I thought that numbering 
patches allowed for dependencies.  I took the point from a recent 
comment and took a punt.  As far as I can tell, patch 2 does not depend 
on 1 or 3 but 3 depends on 1 and 2.  If I put them together, past 
experience says that I would have difficulty in getting them through.  
If I submit them one at a time it would take days to get them through 
iteratively.

Jeff