Fix for debugger breakage

[Mike Hearn]

Hi,

What is the status of this problem? I tried setting WINELOADER to point to
wine-pthread, and while that allowed winedbg to load symbols it spewed
loads of errors while doing so. Is there a proper fix for this?

BTW I think the recent URL Cache patch broke the IE setup program, I get a
crash there calling InterlockedExchange with a null pointer dereference.

thanks -mike