That said, updating in trunk is a different matter. There, the question IMHO is mostly which libtool version to update to. The git version may still have a regression or two, but 2.2.4 doesn't have the -fPIC on HP/IA patch from Steve (which would be trivial to backport of course). Alternatively GCC can wait for 2.2.6 (hopefully in the "couple of weeks at most" time frame).
Updating to 2.2.6 would be okay for me. Paolo