Patch for Preview: Escape DllMain in boehm-gc (Take 2)

[Boehm, Hans]

> -----Original Message-----
> From: Tom Tromey [mailto:tromey@redhat.com]
> Mohan> Here is the GC_DLL patch I promised to redo.
> 
> This looks reasonable.
> I'm checking it in to 3.3 and the trunk.
> 
> Hans, do you have this patch in your tree?
> 
> Tom
> 
Basically, yes.  It looks a little different, since I attempted to clean up some of the macro usage at the same time.

Hans