Sort input file list
so that axolotl_curve25519.so builds in a reproducible way
in spite of indeterministic filesystem readdir order
and http://bugs.python.org/issue30461
background:
While working on the reproducible builds effort, I found that
when building the python-axolotl-curve25519 package for openSUSE Linux, there were differences between each build in axolotl_curve25519.so function ordering
Sort input file list so that axolotl_curve25519.so builds in a reproducible way in spite of indeterministic filesystem readdir order and http://bugs.python.org/issue30461
background: While working on the reproducible builds effort, I found that when building the python-axolotl-curve25519 package for openSUSE Linux, there were differences between each build in axolotl_curve25519.so function ordering