ref: 566f277947682ea7513fa7ff91320607d2ff63f0
parent: 11729e23cb62f2e262afd4580906b6aca4f7a113
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Fri Jun 19 19:18:15 EDT 2020
Add devenv to provide exit status for rcpu (thanks Fazlul) Original change applied, but with different handling of $rstatus using atexit() handler instead of modifying exportfs read loop. Also importing plan9 libc getenv().