Bootstrap hangs while compiling gnat1

[Josef Zlomek]

> >> The stage1 ada compiler is hanging on ia64-linux while compiling gnat1.
> >> Here is one sample of a backtrace:
> >
> > The problem goes away if I revert the var-tracking.c patch that Josef
> > Zlomek installed yesterday.  Perhaps you can talk to him about this.  I
> > haven't looked at the internals of var-tracking.c before, so I can't
> > easily handle this.
> 
> Josef, please revert the patch.

OK, I'll revert the patch.

Josef