[tree-ssa] Mainline merge as of 2003-05-11

[Diego Novillo]

Nothing too exciting in this merge, except a few more libstdc++
regressions that look related to what Jason was planning to fix
this week.

I also had to XFAIL another built-in memcpy test.  Jeff has a
plan for these, but there are more important things to fix right
now.

Oh, powerpc bootstraps are broken.  The compiler bootstraps, but
it then fails while building libstdc++.  This will be fixed when
we enable overlapping live ranges for SSA names.  First, I need
to finish the patch to embed SSA version names in dereferenced
pointers.


Diego.