Remove all or most compatibility-notation warnings. about corn

[Zimmi48]

The first script creates too many problems to be of any help. It changes these lines when it should not:

Require Import Coq.ZArith.Zdiv.
Require Export Coq.ZArith.Zmin.
Require Export Coq.ZArith.Zmax.
Lemma Zabs_triangle

but it's even worse when the library redefines something like Zgcd because then it becomes almost impossible to track down what should have changed and what should have been kept as-is.
This corroborates my previous failed attempts at using git grep to fix this kind of warnings.

[Zimmi48]

The second script only changed 470 lines. There are still problems when compiling the result but I haven't investigated yet how many.

[Zimmi48]

There are replacement problems of the type: Ppred_succ becomes Pos.pred_succuccucc. @JasonGross: if the character location given by warnings are not good enough but line numbers are correct, what about disregarding character location and doing a search-and-replace on the given line?

[JasonGross]

@Zimmi48 I've made an updated version that does that at coq/coq#8383 (comment)

[Zimmi48]

Thanks!