Module strings should be namespaced constants

[13rac1]

The module specific strings in this module should be namespaced constants at the top of the module.

Example:

define('REQUIRE_TO_PUB_REQUIRED', 'required');

Source in module:
https://github.com/chapter-three/require-to-publish/blob/master/required_for_pub.module#L66

Example in Drupal LDAP module:
http://drupalcode.org/project/ldap.git/blob/refs/heads/7.x-2.x:/ldap_servers/ldap_servers.module