* winsup.api/pthread/condvar7.c (mythread): Cast

pthread_mutex_unlock argument of pthread_cleanup_push
to void *, preventing a	compiler warning / testsuite failure.
* winsup.api/pthread/condvar9.c (mythread): Likewise.
* winsup.api/pthread/rwlock7.c (main): Use ftime instead of
_ftime.

winsup/testsuite/winsup.api/pthread/rwlock7.c

@@ -131,7 +131,7 @@ main (int argc, char *argv[])
       assert(pthread_rwlock_init (&data[data_count].lock, NULL) == 0);
     }
 
-  _ftime(&currSysTime1);
+  ftime(&currSysTime1);
 
   /*
    * Create THREADS threads to access shared data.
@@ -177,7 +177,7 @@ main (int argc, char *argv[])
   printf ("%d thread updates, %d data updates\n",
           thread_updates, data_updates);
 
-  _ftime(&currSysTime2);
+  ftime(&currSysTime2);
 
   printf( "\nstart: %ld/%d, stop: %ld/%d, duration:%ld\n",
           currSysTime1.time,currSysTime1.millitm,