Multisite: Clarify descriptions of the `wpmu_signup_blog_notification()` and `wpmu_signup_user_notification()` functions.

See #41017

Built from https://develop.svn.wordpress.org/trunk@41230


git-svn-id: http://core.svn.wordpress.org/trunk@41070 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/ms-functions.php

@@ -814,7 +814,8 @@ function wpmu_signup_user( $user, $user_email, $meta = array() ) {
 }
 
 /**
- * Notify user of signup success.
+ * Send a confirmation request email to a user when they sign up for a new site. The new site will not become active
+ * until the confirmation link is clicked.
  *
  * This is the notification function used when site registration
  * is enabled.
@@ -930,7 +931,8 @@ function wpmu_signup_blog_notification( $domain, $path, $title, $user_login, $us
 }
 
 /**
- * Notify user of signup success.
+ * Send a confirmation request email to a user when they sign up for a new user account (without signing up for a site
+ * at the same time). The user account will not become active until the confirmation link is clicked.
  *
  * This is the notification function used when no new site has
  * been requested.

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-alpha-41229';
+$wp_version = '4.9-alpha-41230';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.