Add libconfuse package

packages/libconfuse.rb

+require 'package'
+
+class Libconfuse < Package
+  description 'Small configuration file parser library for C.'
+  homepage 'https://github.com/martinh/libconfuse'
+  version '3.2.1'
+  source_url 'https://github.com/martinh/libconfuse/releases/download/v3.2.1/confuse-3.2.1.tar.xz'
+  source_sha256 '23c63272baf2ef4e2cbbafad2cf57de7eb81f006ec347c00b954819824add25e'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'apriconv'
+  depends_on 'intltool'
+
+  def self.build
+    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