When doing setoid_rewrite through rewrite, do resolution of classes
in w_unify_to_subterm, deactivated by previous patch (fixes RelationAlgebra).


git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16579 85f007b7-540e-0410-9357-904b9bb8a0f7
Using an "extra" Store.t field in interp_sign instead of dedicated
record fields.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16580 85f007b7-540e-0410-9357-904b9bb8a0f7
Exporting field f_debug (needed for Ssreflect).

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16581 85f007b7-540e-0410-9357-904b9bb8a0f7
Documenting a potential source of incompleteness in the ring tactic,
when reification is customized with a user-defined set of coefficients.



git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16583 85f007b7-540e-0410-9357-904b9bb8a0f7