Integrating Ralf's rebase into setup.exe

[Ralf Habacker]

> The attached fixes the following:
> 
>     1. merge problem when you applied (by hand?) the following patch:
> 
>        http://cygwin.com/ml/cygwin/2002-12/msg00138.html
> 
>     2. bug I introduced in the above patch when I attempted but did
>        not successfully fix rebasing up
> 
> #1 causes the base address to be an extra DLL size amount lower and #2
> causes the base address to be an extra DLL size amount higher.
> 
Applied and checked in. 


Ralf