'Save the checksum dictionary onto the checksum file. Update the
local _checksum_dict variable with this new set of values.
checksum_dict :  New checksum dictionary
checksum_dir  :  The directory in which to store the checksum file to.'

def _save_checksum_dict(self, checksum_dict):

    checksum_path = self._get_checksum_file_path()
    self._checksum_dict = checksum_dict.copy()
    checksum_contents = '\n'.join((((checksum + '    ') + pkg_name) for (pkg_name, checksum) in checksum_dict.iteritems()))
    self._run_command(('echo    "%s"    >    %s' % (checksum_contents, checksum_path)), _run_command_dargs={'verbose': False})
