Create hooks for notifying when OG role permissions are changed

+++ b/og.moduleundefined
@@ -2986,6 +2986,12 @@ function og_role_grant_permissions($rid, array $permissions = array()) {
+    module_invoke_all('og_role_grant_permissions', $role, $permissions);

Please add relevant docs in og.api.php

+++ b/og.api.phpundefined
@@ -123,6 +123,30 @@ function hook_og_role_revoke($entity_type, $gid, $uid, $rid) {
+function hook_og_role_grant_permissions($role, $permissions) {

Last nitpick, we usually add (even if it's a little silly) an example, illustrating the user.

e.g.

if ($role->group_type == 'node') {
drupal_set_message...

Committed, thanks.

Can you re-roll this patch against the latest dev (i.e. remove the old wrong hook)

Committed, thanks.