Add qtdeclarative package (#3487)

Add pre-built binaries

packages/qtdeclarative.rb

+require 'package'
+
+class Qtdeclarative < Package
+  description 'Provides QML and Quick declaratives.'
+  homepage 'https://www.qt.io/'
+  version '5.12.3'
+  source_url 'http://download.qt.io/official_releases/qt/5.12/5.12.3/submodules/qtdeclarative-everywhere-src-5.12.3.tar.xz'
+  source_sha256 '839881cd6996e35c351bc7d560372ebb91e61f3688957c33248c4f31ea007fa7'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/qtdeclarative-5.12.3-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/qtdeclarative-5.12.3-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/qtdeclarative-5.12.3-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/qtdeclarative-5.12.3-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: '19d4b0f1ed081e5295866383c384d1d749e2bdc07d792ca56bb22b0cde308d56',
+     armv7l: '19d4b0f1ed081e5295866383c384d1d749e2bdc07d792ca56bb22b0cde308d56',
+       i686: '4ac64dd69106135cc64acac9a1409c2c4616f39b1417acc49bfb9d7b59218b98',
+     x86_64: 'e868bd1392e0043eac88bc65032a742f7cb04369afa3619f0db68553a5e40551',
+  })
+
+  depends_on 'python27'
+  depends_on 'qtbase'
+
+  def self.build
+    system 'qmake && make'
+  end
+
+  def self.install
+    FileUtils.mkdir_p "#{CREW_DEST_LIB_PREFIX}"
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/share/Qt-5"
+    FileUtils.cp_r Dir.glob('lib/*'), "#{CREW_DEST_LIB_PREFIX}"
+    FileUtils.cp_r 'include', "#{CREW_DEST_PREFIX}/share/Qt-5"
+    FileUtils.cp_r 'mkspecs', "#{CREW_DEST_PREFIX}/share/Qt-5"
+  end
+end