Don't tell users they have to update their .htaccess unless we're actually giving them something with which to update it. fixes #4706

git-svn-id: http://svn.automattic.com/wordpress/trunk@5854 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/options-permalink.php

@@ -101,10 +101,10 @@ $wp_rewrite->flush_rules();
 
 <?php if (isset($_POST['submit'])) : ?>
 <div id="message" class="updated fade"><p><?php
-if ($writable)
-	_e('Permalink structure updated.');
-else
+if ( $permalink_structure && !$usingpi && !$writable )
 	_e('You should update your .htaccess now.');
+else
+	_e('Permalink structure updated.');
 ?></p></div>
 <?php endif; ?>