temporary inchi download location; (#5653)
temporary inchi download location; (#5653)

add temporary inchi download location until the problems with their server are resolved.
bp-kelley/rdkit,ptosco/rdkit,rdkit/rdkit,rdkit/rdkit,rdkit/rdkit,ptosco/rdkit,bp-kelley/rdkit,ptosco/rdkit,bp-kelley/rdkit,rdkit/rdkit,ptosco/rdkit,ptosco/rdkit,rdkit/rdkit,ptosco/rdkit,bp-kelley/rdkit,bp-kelley/rdkit,ptosco/rdkit,rdkit/rdkit,bp-kelley/rdkit,rdkit/rdkit,bp-kelley/rdkit,bp-kelley/rdkit,rdkit/rdkit,ptosco/rdkit