configure: print spice-protocol and spice-server versions

Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

configure

@@ -2701,6 +2701,8 @@ EOF
     spice="yes"
     libs_softmmu="$libs_softmmu $spice_libs"
     QEMU_CFLAGS="$QEMU_CFLAGS $spice_cflags"
+    spice_protocol_version=$($pkg_config --modversion spice-protocol)
+    spice_server_version=$($pkg_config --modversion spice-server)
     if $pkg_config --atleast-version=0.12.0 spice-protocol >/dev/null 2>&1; then
         spice_qxl_io_monitors_config_async="yes"
     fi
@@ -3159,7 +3161,7 @@ echo "libcap-ng support $cap_ng"
 echo "vhost-net support $vhost_net"
 echo "Trace backend     $trace_backend"
 echo "Trace output file $trace_file-<pid>"
-echo "spice support     $spice"
+echo "spice support     $spice ($spice_protocol_version/$spice_server_version)"
 echo "rbd support       $rbd"
 echo "xfsctl support    $xfs"
 echo "nss used          $smartcard_nss"