b5afbc3 Add sss_ncache_set_sid() and sss_ncache_check_sid()

2 files Authored by sbose 9 years ago, Committed by jhrozek 9 years ago,
    Add sss_ncache_set_sid() and sss_ncache_check_sid()
    
    Two new calls are added to allow to add SID based lookups to the
    negative cache.