Now that #11863 is landed, let's expose it to the zig programs that
build stuff via `build.zig`. "Benchmarks" with [turbonss](https://git.sr.ht/~motiejus/turbonss):

Built with:

    $ zig build -Dtarget=x86_64-linux-gnu.2.19 -Dcpu=x86_64_v3 -Drelease-small=true

*Debug, uncompressed*

    174K turbonss-analyze
    161K turbonss-getent
    1.2M turbonss-unix2db
    448K libnss_turbo.so.2.0.0

*Debug, compressed*

     78K turbonss-analyze
     86K turbonss-getent
    572K turbonss-unix2db
    190K libnss_turbo.so.2.0.0

*Stripped, for completeness*

     17K turbonss-analyze
     20K turbonss-getent
    197K turbonss-unix2db
     26K libnss_turbo.so.2.0.0