[Bug 5824] mdac-2.8 installer fails on first run

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5824

------- Additional Comments From [e-mail]  2007-18-03 03:04 -------
Mirek, the bug is still present here.  I bet you aren't
running with a clean .wine, and some previous install
left behind something that makes the install succeed.

I decided to have a go at the next little step myself, 
and added a stub syssetup.dll.  It needed three stub entry points
before dasetup.log no longer complained about missing entry points.
This got me further; it still fails, but now it fails later, with
wine: Unimplemented function syssetup.dll.SetupQueryRegisteredOsComponent called
at address 0x7ee5fa80 
I'll attach the patch so someone can take the next step.