Add autosetup package

packages/autosetup.rb

+require 'package'
+
+class Autosetup < Package
+  description 'autosetup is a tool, similar to autoconf, to configure a build system'
+  homepage 'http://msteveb.github.io/autosetup/'
+  version '0.6.7'
+  source_url 'https://github.com/msteveb/autosetup/archive/v0.6.7.tar.gz'
+  source_sha256 'a8f852e10374261bf96bd19f03fac667b7332ff6ceef858e5199112d1f2782ce'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'tcl'
+
+  def self.build
+    system 'make'
+  end
+
+  def self.install
+    system "./autosetup --sysinstall=#{CREW_DEST_PREFIX}"
+  end
+end