Define obsoleted CLK_TCK to CLOCKS_PER_SEC if not there.

dlls/kernel/time.c

@@ -516,6 +516,9 @@ VOID WINAPI GetSystemTimeAsFileTime(
  *          2) Time is relative. There is no 'starting date', so there is
  *             no need for offset correction, like in UnixTimeToFileTime
  */
+#ifndef CLK_TCK
+# define CLK_TCK CLOCKS_PER_SEC
+#endif
 static void TIME_ClockTimeToFileTime(clock_t unix_time, LPFILETIME filetime)
 {
     ULONGLONG secs = RtlEnlargedUnsignedMultiply( unix_time, 10000000 );