Added an adapter for Epetra_CrsMatrix from Trilinos
Added an adapter for Epetra_CrsMatrix from Trilinos

ddemidov/amgcl,dondieselkopf/amgcl,dondieselkopf/amgcl,huahbo/amgcl,ddemidov/amgcl,dondieselkopf/amgcl,ddemidov/amgcl,huahbo/amgcl,huahbo/amgcl,ddemidov/amgcl