s/blog/site/ in more places.

git-svn-id: http://svn.automattic.com/wordpress/trunk@14326 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/schema.php

@@ -675,7 +675,7 @@ function populate_network( $network_id = 1, $domain = '', $email = '', $site_nam
 
 	$welcome_email = __( 'Dear User,
 
-Your new SITE_NAME blog has been successfully set up at:
+Your new SITE_NAME site has been successfully set up at:
 BLOG_URL
 
 You can log in to the administrator account with the following information:
@@ -683,7 +683,7 @@ Username: USERNAME
 Password: PASSWORD
 Login Here: BLOG_URLwp-login.php
 
-We hope you enjoy your new blog.
+We hope you enjoy your new site.
 Thanks!
 
 --The Team @ SITE_NAME' );