+/** \brief create timing handle
+ \returns timing handle
+
+ \verbatim
+ yaz_timing_t my = yaz_timing_create();
+ yaz_timing_start(my);
+ do_work();
+ yaz_timing_stop(my);
+
+ printf("real=%g user=%g sys=%g\n",
+ yaz_timing_get_real(my),
+ yaz_timing_get_user(my),
+ yaz_timing_get_sys(my));
+
+ yaz_timing_destroy(my);
+
+ \endverbatim
+ */