Open Stack

Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/19730

Log:
commit 4571604bd42b9a799d14caaf6caaeb9af3c7b51b
Author: Adrian Smith <adrian_f_smith at dell.com>
Date:   Tue Jan 15 19:31:42 2013 +0000

    Add handler for CORS "actual requests"
    
    Fix for bug 1095130
    
    * Added a wrapper function around public methods to handle
      CORS actual requests. These requests need to return some
      extra headers to be valid responses to a CORS request.
      Access-Control-Expose-Headers and Access-Control-Allow-Origin.
    
    * Some refactoring of the OPTIONS method so the
      "is_origin_allowed" logic can be reused.
    
    * Added a little extra detail to the CORS documentation.
    
    DocImpact
    
    Change-Id: I68538e472a900775427f21a8a59e738a83dcc8bc