Add sysfsutils package (#2765)

* Add sysfsutils package

* Use better source URL and description.

packages/sysfsutils.rb

+require 'package'
+
+class Sysfsutils < Package
+  description 'These are a set of utilites built upon sysfs, a new virtual filesystem in Linux kernel versions 2.5+ that exposes a system\'s device tree. The current version of sysfsutils includes libsysfs and systool.'
+  homepage 'http://linux-diag.sourceforge.net/Sysfsutils.html'
+  version '2.1.0'
+  source_url 'https://sourceforge.net/projects/linux-diag/files/sysfsutils/2.1.0/sysfsutils-2.1.0.tar.gz'
+  source_sha256 'e865de2c1f559fff0d3fc936e660c0efaf7afe662064f2fb97ccad1ec28d208a'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  def self.build
+    system "./configure", "--prefix=#{CREW_PREFIX}", "--libdir=#{CREW_LIB_PREFIX}"
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end