Update doxygen from 1.8.14 to 1.8.16 (#3493)

* Update doxygen from 1.8.14 to 1.8.16

Update package. Minor stylistic changes. Update project URL as old one is no 404.

* Switch mkdir to be Rubyish

packages/doxygen.rb

@@ -2,41 +2,33 @@ require 'package'
 
 class Doxygen < Package
   description 'Doxygen is the de facto standard tool for generating documentation from annotated C++ sources, but it also supports other popular programming languages such as C, Objective-C, C#, PHP, Java, Python, IDL (Corba, Microsoft, and UNO/OpenOffice flavors), Fortran, VHDL, Tcl, and to some extent D.'
-  homepage 'http://www.stack.nl/~dimitri/doxygen/'
-  version '1.8.14'
-  source_url 'https://github.com/doxygen/doxygen/archive/Release_1_8_14.tar.gz'
-  source_sha256 '18bc3790b4d5f4d57cb8ee0a77dd63a52518f3f70d7fdff868a7ce7961a6edc3'
+  homepage 'http://www.doxygen.nl/'
+  version '1.8.16'
+  source_url 'https://github.com/doxygen/doxygen/archive/Release_1_8_16.tar.gz'
+  source_sha256 '75b18117f88ca1930ab74c05f6712690a26dd4fdcfc9d7d5324be43160645fb4'
 
   binary_url ({
-    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/doxygen-1.8.14-chromeos-armv7l.tar.xz',
-     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/doxygen-1.8.14-chromeos-armv7l.tar.xz',
-       i686: 'https://dl.bintray.com/chromebrew/chromebrew/doxygen-1.8.14-chromeos-i686.tar.xz',
-     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/doxygen-1.8.14-chromeos-x86_64.tar.xz',
   })
   binary_sha256 ({
-    aarch64: 'a4e9e8bbade37410c9d055995070a50208e39bcec4ad4f00a180dc901c2fa5e0',
-     armv7l: 'a4e9e8bbade37410c9d055995070a50208e39bcec4ad4f00a180dc901c2fa5e0',
-       i686: '7e117bc6d09452cb8b271357dcdefb3484aed607de6b0cde60d5085b2d1e12d1',
-     x86_64: '90eb469a28b5f7d058d90a93b21589a239edcc29059d397585e59f44d786f17d',
   })
 
   depends_on 'cmake' => :build
   depends_on 'python27' => :build
 
   def self.build
-    system "mkdir -p build"
-    Dir.chdir("build") do
-      system "cmake",
+    Dir.mkdir('build')
+    Dir.chdir('build') do
+      system 'cmake',
              "-DCMAKE_INSTALL_PREFIX:PATH=#{CREW_PREFIX}",
              "-DCMAKE_LIBRARY_PATH=#{CREW_LIB_PREFIX}",
-             ".."
-      system "make"
+             '..'
+      system 'make'
     end
   end
 
   def self.install
-    Dir.chdir("build") do
-    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+    Dir.chdir('build') do
+      system 'make', "DESTDIR=#{CREW_DEST_DIR}", 'install'
     end
   end
 end