add libseccomp version to runc --version

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

libcontainer/seccomp/seccomp_linux.go

@@ -266,3 +266,8 @@ func parseStatusFile(path string) (map[string]string, error) {
 
 	return status, nil
 }
+
+// Version returns major, minor, and micro.
+func Version() (uint, uint, uint) {
+	return libseccomp.GetLibraryVersion()
+}