Add libexif and exif packages

Add pre-built binaries

packages/exif.rb

+require 'package'
+
+class Exif < Package
+  description 'A small command-line utility to show EXIF information hidden in JPEG files'
+  homepage 'https://libexif.github.io/'
+  version '0.6.21'
+  source_url 'https://github.com/libexif/exif/archive/exif-0_6_21-release.tar.gz'
+  source_sha256 'f55e125eee6c2a75d367d3b388bcd7bea75dc944fabe8671bb32e889192f4b77'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/exif-0.6.21-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/exif-0.6.21-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/exif-0.6.21-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/exif-0.6.21-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: '8f8de193c0571c268e8004876a0365178237107d2e21d44766ef128f204adcb3',
+     armv7l: '8f8de193c0571c268e8004876a0365178237107d2e21d44766ef128f204adcb3',
+       i686: '66264ec4145cb0ea008eeb7a584dbda2339e1b3f2209e712e5bb8b6e794f3db8',
+     x86_64: '5d99ef721aafe110f565698a8ee42d258d89748cbb37073175781af7ec7cc617',
+  })
+
+  depends_on 'libexif'
+  depends_on 'popt'
+
+  def self.build
+    system 'autoreconf -i -f'
+    system "sed -i '69,70d' po/Makefile.in.in"
+    system './configure',
+           "--prefix=#{CREW_PREFIX}",
+           "--libdir=#{CREW_LIB_PREFIX}",
+           '--disable-maintainer-mode'
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end

packages/libexif.rb

+require 'package'
+
+class Libexif < Package
+  description 'A library for parsing, editing, and saving EXIF data'
+  homepage 'https://libexif.github.io/'
+  version '0.6.21'
+  source_url 'https://github.com/libexif/libexif/archive/libexif-0_6_21-release.tar.gz'
+  source_sha256 '8cb37aa1745ca9050403c501ad4da2924e98ec5460bbd5c9d09bd57f0c746636'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/libexif-0.6.21-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/libexif-0.6.21-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/libexif-0.6.21-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/libexif-0.6.21-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: 'c4d28a7a1a806559be725e264daf15759921281cd53d584fc66a2de955c4b48a',
+     armv7l: 'c4d28a7a1a806559be725e264daf15759921281cd53d584fc66a2de955c4b48a',
+       i686: '7b03b0d97715f99eebdeac70afe4d3562309eda01523d648a6680b02107eb5cf',
+     x86_64: 'ffe068550dd1f366252762ee529a8bd10984f1036d11984bfefabb468893da21',
+  })
+
+  def self.build
+    system 'autoreconf -i -f'
+    system "sed -i '69,70d' po/Makefile.in.in"
+    system './configure',
+           "--prefix=#{CREW_PREFIX}",
+           "--libdir=#{CREW_LIB_PREFIX}",
+           '--disable-maintainer-mode'
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end