Forget it. While the patch I'm proposing here is IMO still valuable, it does nothing for the failures in missing.test and missing2.test; in fact, these failure are due to the fact that I used an absolute paths for autoconf and autom4te when configuring.
At this point, I think that fixing missing.test and missing2.test is the best option. I will soonish propose a patch to do so. Regards, Stefano