Factorize the constr_pat_discr_{*} functions.
Factorize the constr_pat_discr_{*} functions.

Zimmi48/coq,SkySkimmer/coq,ejgallego/coq,ejgallego/coq,coq/coq,Zimmi48/coq,coq/coq,SkySkimmer/coq,coq/coq,ejgallego/coq,SkySkimmer/coq,ejgallego/coq,coq/coq,SkySkimmer/coq,Zimmi48/coq,Zimmi48/coq