Add darkhttpd (1.12) package

darkhttpd is a fast, secure, and lightweight static HTTP server.

Tested as working on Samsung XE50013-K01US (x86_64).

packages/darkhttpd.rb

+require 'package'
+
+class Darkhttpd < Package
+  version '1.12'
+  source_url 'https://unix4lyfe.org/darkhttpd/darkhttpd-1.12.tar.bz2'
+  source_sha1 '30892c4b5d617548410914c9a5e56e0ebce02256'
+
+  def self.build
+    system 'make' 
+  end
+
+  def self.install
+    FileUtils.mkdir_p "#{CREW_DEST_DIR}/usr/local/bin"
+    FileUtils.cp 'darkhttpd', "#{CREW_DEST_DIR}/usr/local/bin/"
+  end
+end