Ticket 48537 - undefined reference to `abstraction_increment'
    
    Bug Description:  Nunc-stan's has a component, liblfds. This was failing with
    gcc 6.0.
    
    Fix Description:  Fix a macro check for correctly detecting gcc 6 or higher in
    liblfds. Increase the DS version of nunc-stans to 0.1.8 to consume the fix.
    
    https://fedorahosted.org/389/ticket/48537
    
    Author: wibrown
    
    Review by: nhosoi (Thanks!)