def add_executable name, path
      path = expand_local_path path
      executables << OpenStruct.new( :name => name, :path => path, :file_target => self )
    end
def add_executable name, path
      path = expand_local_path path
      executables << OpenStruct.new( :name => name, :path => path, :file_target => self )
    end
Add an executable to the RubyGem package.

 @param name [Symbol] that will be used to retrieve this executable later.
 @param path [File] relative path to the executable that will be associated
 with this name.