Got h264ref working in SPEC; this was another signed-char issue (very difficult one to find - it didn't crash, it just came out with subtly the wrong result); compiling that and sphinx3 with -fsigned-char and they seem happy.
With Richard's fix for gromacs that leaves just the zeusmp binary that's too large to run on silverberry; it seems to startup on canis1 (that has more RAM). So that should be a full set; I just need to get the fortran stuff going on canis1.
Kicked off discussion on libffi-discuss about variadic calls; people seem OK with the idea of adding it (although unsure exactly how many things really use it - even though there are examples in Python documentation). Also kicked off some of the internal paperwork to contribute code for it.
Dave