message: drakefile: minor changes
diff: @@ -126,7 +126,7 @@ def configure(zlib_lib,
  if cxx_toolkit.os == drake.os.macos:
  config.define('HAVE_STATFS')
  - cxx_config = cxx_config + config
  + cxx_config += config
  cxx_config.lib_path_runtime('.')
  openssl_libs = None
  @@ -137,7 +137,7 @@ def configure(zlib_lib,
  openssl_libs = drake.copy([openssl_lib_crypto, openssl_lib_ssl],
  lib_path, strip_prefix = True)
  - cxx_config = cxx_config + ldap_config
  + cxx_config += ldap_config
  cxx_config.define('HAVE_LDAP=1')
  config.define('HAVE_LDAP=1')
  