Bootstrap failure of gcc-ss-20010409 in ia64

[Jim Wilson]

I applied the patch by hand to the gcc trunk.  It didn't apply automatically,
I don't know why.  I did a make all, and libstdc++ built without error.
Not too surprising, because the patch is creating the missing dies at the
point where we notice that they are missing.  It isn't obvious that this is
the right fix, but Dan's explanation is pretty convincing, so it sounds like
this is the right approach.

Jim