stdbin: have standard binaries distributed with the language #230

Small binaries (probably from enzo) that have more predictable behavior and nicer APIs

This way we can use commands on the stdlib and still have predictable behavior when executing the scripts on different systems.

We could use $NASHROOT/bin for this and search on it before searching on the host $PATH. This way the user do not have to change its own PATH and bash scripts continue to work without any impact (using the tools installed on the host).