monkey patch to make merge_worker work with simple_worker 0.7.4

simple_worker_merge_worker_monkey_patch.rb

module SimpleWorker
  class Base
    class << self
     
      def merge_worker(file, class_name)
        ret = nil
        f2 = SimpleWorker::MergeHelper.check_for_file(file, @caller_file)

        fbase = File.basename(f2)
        ret = {:name=>fbase, :path=>f2}
        @merged[fbase] = ret
        
        ret[:class_name] = class_name
        @merged_workers[file] = ret
        ret
      end
      
    end
  end
end