Introduce wp_is_trusted_network()

A first step to establish concepts around trusted and untrusted networks.

* Will always return false as default.
* Will one day have a filter.

Fixes #30145

Built from https://develop.svn.wordpress.org/trunk@30071


git-svn-id: http://core.svn.wordpress.org/trunk@30071 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/ms-functions.php

@@ -2474,3 +2474,14 @@ function wp_get_sites( $args = array() ) {
 
 	return $site_results;
 }
+
+/**
+ * Determine if the current network should be treated as a trusted network.
+ *
+ * @since 4.1.0
+ *
+ * @return bool False.
+ */
+function wp_is_trusted_network() {
+	return false;
+}

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30070';
+$wp_version = '4.1-alpha-30071';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.