(empth_sleep) [_WIN32]: Remove a change to the random seeding

that accidently got committed in rev 1.65.  Was incorrect in rev 1.66.

(empth_sleep) [_WIN32]: Switch srand() to srandom() to be consistent
with the rest of the empire code.

src/lib/empthread/ntthread.c

@@ -348,7 +348,7 @@ empth_threadMain(void *pvData)
      * In WIN32, each thread has seed
      */
     time(&now);
-    srand( ^ (unsigned)pThread);
+    srandom(now ^ (unsigned)pThread);
 
     /* Switch to this thread context */
     loc_RunThisThread(NULL);