- Error on no/insufficient files.
Instead of just returning no results. This is more useful when
debugging complicated bash scripts.
- Use elf magic to allow any file order in perfbd.py/stack.py.
This was already implemented in stack.py, now also adopted in
perfbd.py.
Elf files always start with the magic string "\x7fELF", so we can use
this to figure out the types of input files without needing to rely on
argument order.
This is just one less thing to worry about when invoking these
scripts.
Christopher Haster
3e03c2ee7f