Adding an "anystate" to "anystate" rules event

It seems like a good idea to trigger a generic event when there has been any kind of state change. That way a rule could be set up to notify an admin or a content management role when there has been a state change, regardless of the content type or the new state.

To accomplish this only requires two additional lines of code.

1. At the bottom of _content_moderation_node_transition_matrix(), before the return statement:

$node_state_matrix["anynode_anystate_anystate"]= t("State of any node type changed to any other state");

2. Inside of _content_moderation_save_history(), in the last if statement:

if(module_exists('rules')) {
    rules_invoke_event("{$node->type}_{$curstate}_{$nextstate}", $node);
    rules_invoke_event("anynode_anystate_{$nextstate}", $node);
    // NEW LINE TO ADD:
    rules_invoke_event("anynode_anystate_anystate", $node);
  }