Add netperf package (#3988)

Add pre-built binaries

packages/netperf.rb

+require 'package'
+
+class Netperf < Package
+  description 'Netperf is a benchmark that can be used to measure the performance of many different types of networking. It provides tests for both unidirectional throughput, and end-to-end latency.'
+  homepage 'https://hewlettpackard.github.io/netperf/'
+  version '2.7.0'
+  source_url 'https://github.com/HewlettPackard/netperf/archive/netperf-2.7.0.tar.gz'
+  source_sha256 '4569bafa4cca3d548eb96a486755af40bd9ceb6ab7c6abd81cc6aa4875007c4e'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/netperf-2.7.0-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/netperf-2.7.0-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/netperf-2.7.0-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/netperf-2.7.0-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: '2be8d5e4d5aceb3216010f0e79b19839d92f3fd71f0dfe22d9c6335ff7a4baed',
+     armv7l: '2be8d5e4d5aceb3216010f0e79b19839d92f3fd71f0dfe22d9c6335ff7a4baed',
+       i686: '0dff93ad6efdf1c1f71062d499d26e718ba3aa94b72c1659fe6b286898b31c7e',
+     x86_64: 'e9dc4df77a37125465ac91e858c12d0bddf365547711a8da295bd6daae056e30',
+  })
+
+  def self.build
+    system './configure',
+           "--prefix=#{CREW_PREFIX}",
+           "--libdir=#{CREW_LIB_PREFIX}"
+    system 'make'
+  end
+
+  def self.check
+    system 'make', 'check'
+  end
+
+  def self.install
+    system 'make', "DESTDIR=#{CREW_DEST_DIR}", 'install'
+  end
+end