Add tidy package

Abstract library directory

Add pre-built binaries

packages/tidy.rb

+require 'package'
+
+class Tidy < Package
+  description 'The granddaddy of HTML tools, with support for modern standards'
+  homepage 'http://www.html-tidy.org/'
+  version '5.6.0'
+  source_url 'https://github.com/htacg/tidy-html5/archive/5.6.0.tar.gz'
+  source_sha256 '08a63bba3d9e7618d1570b4ecd6a7daa83c8e18a41c82455b6308bc11fe34958'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/tidy-5.6.0-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/tidy-5.6.0-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/tidy-5.6.0-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/tidy-5.6.0-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: 'cff1c1a6c12ac5503db6d5d38b674069df305dfdf5abe327af57f4fe10559b07',
+     armv7l: 'cff1c1a6c12ac5503db6d5d38b674069df305dfdf5abe327af57f4fe10559b07',
+       i686: '34c25a0930741ae084808c6008d9103efcdbc7d0f2e4fade64f6d4c9d239cdd2',
+     x86_64: 'd132e0477d2273b7b9a5077b5389b0325f3dfeaed7516a632fa14620ab32e95e',
+  })
+
+  def self.build
+    case ARCH
+    when 'x86_64'
+      system "cmake . -DCMAKE_INSTALL_PREFIX=#{CREW_PREFIX} -DLIB_SUFFIX=64"
+    else
+      system "cmake . -DCMAKE_INSTALL_PREFIX=#{CREW_PREFIX}"
+    end
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end