Add Content Delivery Network as an option into the Joomla Core for  external core libraries.

This feature will ad the ability to pull core files that are are hard coded in the Joomla framework from a third party content delivery service.   The system will be off by default and is backward compatible with template designs for administration.  The system will focus initially on the larger JS files that we include from external packages such as jQuery and Mootools.  But can be expanded as needed to include other CORE external packages.    It is NOT intended to replace systems using external CDN's for full content delivery.  I think the benefits of using CDN's or NOT using them can be an individual decision.  

The current extent of this feature is allowing 

jQuery
JQuery-migrate 
MooTools core 

to be sourced from a third party provider.
    
This feature requests follows some discussion on Joomla CMS Development List
https://groups.google.com/forum/?hl=en-GB#!topic/joomla-dev-cms/l_rXxF9Ev68