Add GNU MACchanger to package list (#4896)

* Add GNU MACchanger to package list

packages/macchanger.rb

+require 'package'
+
+class Macchanger < Package
+  description 'GNU MAC Changer is an utility that makes the maniputation of MAC addresses of network interfaces easier.'
+  homepage 'http://www.gnu.org/software/macchanger/'
+  version '1.7.0'
+  compatibility 'all'
+  source_url 'https://github.com/alobbs/macchanger/releases/download/1.7.0/macchanger-1.7.0.tar.gz'
+  source_sha256 'dae2717c270fd5f62d790dbf80c19793c651b1b26b62c101b82d5fdf25a845bf'
+
+  def self.build
+    system "./configure #{CREW_OPTIONS}"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+  def self.check
+    system "make", "check"
+  end
+end