Add libglade package

packages/libglade.rb

+require 'package'
+
+class Libglade < Package
+  description 'Libglade is a library that performs a similar job to the C source output routines in the GLADE user interface builder.'
+  homepage 'http://www.jamesh.id.au/software/libglade/'
+  version '2.6.4'
+  source_url 'https://ftp.gnome.org/pub/GNOME/sources/libglade/2.6/libglade-2.6.4.tar.bz2'
+  source_sha256 '64361e7647839d36ed8336d992fd210d3e8139882269bed47dc4674980165dec'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'python3'
+
+  def self.build
+    system 'pip3 install six'
+    system './configure',
+           "--prefix=#{CREW_PREFIX}",
+           "--libdir=#{CREW_LIB_PREFIX}"
+    system 'make'
+    system 'pip3 uninstall --yes six'
+  end
+
+  def self.install
+    system 'make', "DESTDIR=#{CREW_DEST_DIR}", 'install'
+  end
+
+  def self.check
+    system 'make', 'check'
+  end
+end