Fix ELAPSED macros in rig.c to provide more accurate timing

src/rig.c

@@ -157,8 +157,8 @@ const char hamlib_copyright[231] = /* hamlib 1.2 ABI specifies 231 bytes */
 
 #define CHECK_RIG_ARG(r) (!(r) || !(r)->caps || !(r)->state.comm_state)
 
-#define ELAPSED1 clock_t __begin = clock()
-#define ELAPSED2 rig_debug(RIG_DEBUG_TRACE, "%s: elapsed=%.0lfms\n", __func__, ((double)clock() - __begin) / CLOCKS_PER_SEC * 1000)
+#define ELAPSED1 struct timespec __begin; elapsed_ms(&__begin, HAMLIB_ELAPSED_SET);
+#define ELAPSED2 rig_debug(RIG_DEBUG_TRACE, "%s: elapsed=%.0lfms\n", __func__, elapsed_ms(&__begin, HAMLIB_ELAPSED_GET));
 
 #define LOCK \