Add sysstat package

packages/sysstat.rb

+require "package"
+
+class Sysstat < Package
+  description 'The sysstat utilities are a collection of performance monitoring tools for Linux. These include sar, sadf, mpstat, iostat, tapestat, pidstat, cifsiostat and sa tools.'
+  homepage 'http://sebastien.godard.pagesperso-orange.fr/'
+  version '11.5.6'
+  source_url 'https://github.com/sysstat/sysstat/archive/v11.5.6.tar.gz'
+  source_sha1 'a8913a7a8418590bc6ea77a7bbe737577ef96e33'
+
+  def self.build
+    system "sed -i 's/GRP=root/GRP=$(whoami)/' configure"
+    system "sed -i 's/\"root\"/\"$(whoami)\"/g' configure"
+    system "sed -i 's/root/$(whoami)/g' configure.in"
+    system "sed -i 's/root/$(whoami)/g' sysstat-11.5.6.spec"
+    system "./configure \
+            --docdir=/usr/local/doc \
+            --infodir=/usr/local/info \
+            --mandir=/usr/local/man"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end
+