Move CSS and JS into mirror

Issue Summary

This patch move CSS and JS aviable into header in mirror url; patch change file:

• include/bootstrap.inc
• include/commont.inc

Usage

1. apply patch to file
2. add into settings.php for current file the code
   
   <?php
$base_url_mirror[] = 'http://static1.mysite.tpl';
$base_url_mirror[] = 'http://static2.mysite.tpl';
// ...
?>
   
   change path name for static. Use one or more static domain, encrease number of static domain can slow down performance (long dns lockup time response).
3. Configure your mirror server to copy all static file (css, js, images) or link your static DNS to main directory.

Scope

Using this patch to encrease performance:

• http://developer.yahoo.com/performance/rules.html#split
• http://yuiblog.com/blog/2007/04/11/performance-research-part-4/

TO-DO

Static domain are random from aviable url mirror, and is not the best because user must download the same file different time if url mirror change into different page, but if use only two or tree url mirror it work fine.