Add netpbm package (#3420)

Fix paths in manweb perl script

Add pre-built binaries

packages/netpbm.rb

+require 'package'
+
+class Netpbm < Package
+  description 'Netpbm is a toolkit for manipulation of graphic images, including conversion of images between a variety of different formats.'
+  homepage 'http://netpbm.sourceforge.net/'
+  version '10.73.28'
+  source_url 'https://downloads.sourceforge.net/project/netpbm/super_stable/10.73.28/netpbm-10.73.28.tgz'
+  source_sha256 'c0d32d4b9a53fde47dd9a36f45653e0ef51f6c390517f10b0c5056d1a8a844bd'
+
+  binary_url ({
+    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/netpbm-10.73.28-chromeos-armv7l.tar.xz',
+     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/netpbm-10.73.28-chromeos-armv7l.tar.xz',
+       i686: 'https://dl.bintray.com/chromebrew/chromebrew/netpbm-10.73.28-chromeos-i686.tar.xz',
+     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/netpbm-10.73.28-chromeos-x86_64.tar.xz',
+  })
+  binary_sha256 ({
+    aarch64: '2f4dd0de3f9af1423121ba6e82ddc268863fadaf50222a51dc2026652e99fefb',
+     armv7l: '2f4dd0de3f9af1423121ba6e82ddc268863fadaf50222a51dc2026652e99fefb',
+       i686: '3a900cd5917c750a09f5d9e5f5845c2cfe1a02539c3ad8ef63d0a291ea0f1c64',
+     x86_64: '06375d9b711b7a03a26e8d00d84c3a13f3d1c2bc3cff16442c39b29c7ca2a58f',
+  })
+
+  depends_on 'libtiff'
+
+  def self.patch
+    system "sed -i 's,/etc/,#{CREW_DEST_PREFIX}/etc/,g' buildtools/installnetpbm.pl"
+  end
+
+  def self.build
+    puts
+    puts 'This is the dumbest thing but when prompted, hit enter for every prompt.'.lightblue
+    system './configure'
+    system 'make'
+    system 'make package'
+  end
+
+  def self.install
+    puts
+    puts "When prompted for install prefix, enter '#{CREW_DEST_PREFIX}', otherwise hit enter for every other prompt.".lightblue
+    puts
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/etc"
+    FileUtils.mkdir_p "#{CREW_DEST_PREFIX}/share"
+    system './installnetpbm'
+    system "sed -i 's,/usr/bin/perl,#{CREW_PREFIX}/bin/perl,' #{CREW_DEST_PREFIX}/bin/manweb"
+    system "sed -i 's,/etc/manweb.conf,#{CREW_PREFIX}/etc/manweb.conf,' #{CREW_DEST_PREFIX}/bin/manweb"
+    FileUtils.mv "#{CREW_DEST_PREFIX}/man", "#{CREW_DEST_PREFIX}/share"
+    FileUtils.mv "#{CREW_DEST_PREFIX}/lib", "#{CREW_DEST_LIB_PREFIX}" if ARCH == 'x86_64'
+    FileUtils.rm_f '/tmp/netpbm'
+  end
+end