ureport: add support for client-side authentication

Please note that the libreport_curl api is changed and since we're not
bumping sonames ABRT has to explicitly depend on this version in spec.

Related to rhbz#1053042.

Signed-off-by: Martin Milata <mmilata@redhat.com>
add SSLClientAuth to ureport dbus config interface

Signed-off-by: Martin Milata <mmilata@redhat.com>