X Object Manager policy revisions to xserver.if.
    
    X Object Manager policy revisions to xserver.if.
    
    This commit consists of two parts:
    
    1. Revisions to xserver_object_types_template and
       xserver_common_x_domain_template.  This reflects the dropping
       of many of the specific event, extension, and property types.
    
    2. New interfaces:
       xserver_manage_core_devices: Gives control over core mouse/keyboard.
       xserver_unprotected: Allows all clients to access a domain's X objects.
       Modified interfaces:
       xserver_unconfined: Added x_domain typeattribute statement.
    
    Signed-off-by: Eamon Walsh <ewalsh@tycho.nsa.gov>
    Signed-off-by: Chris PeBenito <cpebenito@tresys.com>