Now that the fork_inferior takes care of adding the main thread for
the target_create_inferior case, and inf_ptrace_attach adds it
for the target_attach case, the SPU target, which extends the ptrace target
should no longer add it.

Unfortunatelly, I have no means to test this.  Ulrich, does this look OK?

You only need patches 1, 2 and this one for the SPU changes.

OK?

-- 
Pedro Alves