fix Makefile and opam files #2460

Annotations

10 warnings

The default and global localities for this command outside sections

Notation "_ { _ := _ }" was already used.

Notation "_ ,,, _" was already used.

Notation "_ * _" was already used in scope type_scope.

Notation "_ <-> _" was already used in scope type_scope.

Notation "_ + _" was already used in scope type_scope.

Notation "_ * _" was already used in scope type_scope.

Notation "_ <-> _" was already used in scope type_scope.

Notation "_ + _" was already used in scope type_scope.

Notation minus_diag is deprecated since 8.16.