New Formula for netperf

[tomburns]

Created a new formula for netperf. Test avoids disrupting any existing netserver processes; will use existing one if available.

[jacknagel]

$ brew test ./netperf.rb -v
Testing netperf
==> netperf
netperf
complete_addrinfo: could not resolve 'localhost' port '0' af 2
    getaddrinfo returned 8 nodename nor servname provided, or not known
Error: netperf: failed

[tomburns]

Fantastic; passed on three machines I installed on. This is a fairly tricky package to test due to limited options that exit 0, and I couldn't find an appropriate example browsing the repo. What's the standard for testing things with both a server and client component without meddling with a potentially extant process?

[adamv]

"omit the test", I suppose.

[MikeMcQuaid]

Better to just run a command with --version than omitting it; at least that verifies it has linked.