hamlib: support cross-compilation, cleanup
hamlib: support cross-compilation, cleanup

unfortunately, this disables perl bindings, but at least it compiles now

- remove ExtUtilsMakeMaker, doesn't make a difference in the output
- enable strictDeps

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