well, updating those is a bit tricky, not impossible - try googling around for help. They are ARM binaries, but resides in the toolchain and is located outside the scratchbox environment. From inside scratchbox, wrappers are used to reach the actual binaries - cant remember the exact path, but a bit of local searching in the /scratchbox path, outside scratchbox, should easily locate them (find /scratchbox -name autoconf).
You will then need to compile new binaries , and replace the included ones.