CPack/STGZ: Installer script removes /bin symlink
How to reproduce
$ sudo docker run --rm -it ubuntu:20.04 /bin/bash
# apt-get update && apt-get install -y wget
# wget https://github.com/Kitware/CMake/releases/download/v3.17.3/cmake-3.17.3-Linux-x86_64.sh
# sh cmake-3.17.3-Linux-x86_64.sh --prefix=/ --exclude-subdir --skip-license
# ls /bin
Now /bin
contains only CMake binaries.