Targ_FindNode
gn = Targ_FindNode(name, TARG_CREATE);
gn = Targ_FindNode(cp, TARG_CREATE);
bottom->node = Targ_FindNode(bottom->file, TARG_CREATE);
targ->node = Targ_FindNode(targ->file, TARG_CREATE);
if (Targ_FindNode(s->file, TARG_NOCREATE) != NULL) {
gn = Targ_FindNode(name, TARG_CREATE);
extra = Targ_FindNode(gn->name + objdir_len, TARG_NOCREATE);