Update libpng from 1.6.34 to 1.6.36 (#3177)

Add pre-built binaries

packages/libpng.rb

@@ -3,32 +3,37 @@ require 'package'
 class Libpng < Package
   description 'libpng is the official PNG reference library.'
   homepage 'http://libpng.org/pub/png/libpng.html'
-  version '1.6.34'
-  source_url 'https://sourceforge.net/projects/libpng/files/libpng16/1.6.34/libpng-1.6.34.tar.xz'
-  source_sha256 '2f1e960d92ce3b3abd03d06dfec9637dfbd22febf107a536b44f7a47c60659f6'
+  version '1.6.36'
+  source_url 'https://downloads.sourceforge.net/project/libpng/libpng16/1.6.36/libpng-1.6.36.tar.xz'
+  source_sha256 'eceb924c1fa6b79172fdfd008d335f0e59172a86a66481e09d4089df872aa319'
 
   binary_url ({
-    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.34-chromeos-armv7l.tar.xz',
-     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.34-chromeos-armv7l.tar.xz',
-       i686: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.34-chromeos-i686.tar.xz',
-     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.34-chromeos-x86_64.tar.xz',
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-x86_64.tar.xz',
   })
   binary_sha256 ({
-    aarch64: '380cd321d5abdbda55f3941e7ebeccccbe2b4618d939ca3e8bb80f13c229fc68',
-     armv7l: '380cd321d5abdbda55f3941e7ebeccccbe2b4618d939ca3e8bb80f13c229fc68',
-       i686: 'b7ec1bfc198559a3568add4351eea4f9f05d35dcf97af57df017e2355e5e7234',
-     x86_64: '172fa194c4a7e185a9bacf7a1932c6dcf71ce0a3d19990fd10a39ee9f6a2171a',
+    aarch64: '134223fd27b8f1fb39bd1f44c795d41b60b49070c9f5f8c7b582af53b090279e',
+     armv7l: '134223fd27b8f1fb39bd1f44c795d41b60b49070c9f5f8c7b582af53b090279e',
+       i686: 'd84e969b8f24fc998ed61bf4a669346216d6167ed9f9f5b026eac5acb47ea0a0',
+     x86_64: 'fe2f3ba8855fbba9c0f81a1a5d377e78be56e8895e428e19c32b497417a8bf79',
   })
 
   depends_on 'zlibpkg'
 
+  def self.patch
+    # Fix /usr/bin/file: No such file or directory
+    system 'filefix'
+  end
+
   def self.build
-      system './configure',
-        "--prefix=#{CREW_PREFIX}",
-        "--libdir=#{CREW_LIB_PREFIX}",
-        '--disable-dependency-tracking',
-        '--disable-maintainer-mode'
-      system 'make'
+    system './configure',
+           "--prefix=#{CREW_PREFIX}",
+           "--libdir=#{CREW_LIB_PREFIX}",
+           '--disable-dependency-tracking',
+           '--disable-maintainer-mode'
+    system 'make'
   end
 
   def self.install