Add diffuse package (#3438)

Add pre-built binaries

packages/diffuse.rb

+require 'package'
+
+class Diffuse < Package
+  description 'graphical tool for merging and comparing text files'
+  homepage 'http://diffuse.sourceforge.net/'
+  version '0.4.8'
+  source_url 'https://downloads.sourceforge.net/project/diffuse/diffuse/0.4.8/diffuse-0.4.8.tar.bz2'
+  source_sha256 'c1d3b79bba9352fcb9aa4003537d3fece248fb824781c5e21f3fcccafd42df2b'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/diffuse-0.4.8-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/diffuse-0.4.8-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/diffuse-0.4.8-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/diffuse-0.4.8-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: '1d729d31f35e0839c4793d94e08a35088f9fcf8244799aedebdfc554a34cd944',
+     armv7l: '1d729d31f35e0839c4793d94e08a35088f9fcf8244799aedebdfc554a34cd944',
+       i686: '067c999e0893d4ded1567d22b0f6abcdfa2b4152877d46e676302c211871e7e7',
+     x86_64: '868bd81b7505b4488fdcb86f3b710e45b46e410b4c28c95c73a51411bc73d27f',
+  })
+
+  depends_on 'pygtk'
+  depends_on 'xdg_base'
+  depends_on 'sommelier'
+
+  def self.install
+    system 'python', 'install.py',
+           "--prefix=#{CREW_PREFIX}",
+           "--destdir=#{CREW_DEST_DIR}",
+           "--sysconfdir=#{CREW_PREFIX}/etc"
+  end
+end