Fix footer whitespace/clearing issues, support two-line footer for low widths. see #17324.

git-svn-id: https://develop.svn.wordpress.org/trunk@17865 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/admin-footer.php

@@ -14,7 +14,6 @@ if ( !defined('ABSPATH') )
 <div class="clear"></div></div><!-- wpbody-content -->
 <div class="clear"></div></div><!-- wpbody -->
 <div class="clear"></div></div><!-- wpcontent -->
-</div><!-- wpwrap -->
 
 <div id="footer">
 <p id="footer-left" class="alignleft"><?php
@@ -38,6 +37,7 @@ if ( function_exists('get_site_option') ) {
 
 ?>
 
+<div class="clear"></div></div><!-- wpwrap -->
 <script type="text/javascript">if(typeof wpOnload=='function')wpOnload();</script>
 </body>
 </html>