mit-scheme: set MITSCHEME_LIBRARY_PATH properly
mit-scheme: set MITSCHEME_LIBRARY_PATH properly

by changing its path and wrapping the correct binary
all the other binaries in bin/ are symlinks to bin/mit-scheme${arch}-${version}
therefore its easier to just wrap that one instead of all the others

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs