Set Twenty Fifteen as the new default theme. see #29799.

Built from https://develop.svn.wordpress.org/trunk@29895


git-svn-id: http://core.svn.wordpress.org/trunk@29650 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-theme.php

@@ -44,6 +44,7 @@ final class WP_Theme implements ArrayAccess {
 		'twentytwelve'   => 'Twenty Twelve',
 		'twentythirteen' => 'Twenty Thirteen',
 		'twentyfourteen' => 'Twenty Fourteen',
+		'twentyfifteen'  => 'Twenty Fifteen',
 	);
 
 	/**

wp-includes/default-constants.php

@@ -318,6 +318,6 @@ function wp_templating_constants() {
 	 * @since 3.0.0
 	 */
 	if ( !defined('WP_DEFAULT_THEME') )
-		define( 'WP_DEFAULT_THEME', 'twentyfourteen' );
+		define( 'WP_DEFAULT_THEME', 'twentyfifteen' );
 
 }