Use pagure links as a reference to upstream Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>

sss_sifp: add prefix and exec_prefix to pkg-config Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

sss_sifp: pkg-config requires is a comma separated list Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

sss_sifp: build https://fedorahosted.org/sssd/ticket/2254 Reviewed-by: Sumit Bose <sbose@redhat.com>