patch 8.0.0163: cannot build with Ruby 2.4 commit https://github.com/vim/vim/commit/6abda995a57306028c3dc5c62c9b15858e5a3bcf Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jan 9 21:10:31 2017 +0100 patch 8.0.0163: cannot build with Ruby 2.4 Problem: Ruby 2.4 no longer supports rb_cFixnum. Solution: move rb_cFixnum into an #ifdef. (Kazuki Sakamoto, closes https://github.com/vim/vim/issues/1365)