[cctbxbb] Unstable platform-dependent sort order for flex.sort_permutation

[Luc Bourhis]

> I have just committed the necessary changes to add the parameter stable(=False) to flex.sort_permutation(). miller.array.sort_permutation sets stable=True when calling flex.sort_permutation(). This looks to have made the CC1/2 calculations platform-independent.

Thank you, that’s generally useful an addition. Sorry for not getting the context of your question in the first place!