[libc-commits] [libc] [libc] Clean up copt naming (PR #136274)

[Michael Jones via libc-commits]

https://github.com/michaelrj-google commented:

Thanks for picking this up. My intent was for the variables in cmake to still have the `LIBC_CONF` prefix, what I wanted cleaned up was the actual C flags to be updated. As an example, instead of `LIBC_QSORT_IMPL` it should be `LIBC_COPT_QSORT_IMPL`. That C option would be controlled by the cmake variable `LIBC_CONF_QSORT_IMPL`.

https://github.com/llvm/llvm-project/pull/136274