Don't return from my_thread_global_end() until all threads have called my_thread_end()
Bug#24387: Valgrind: my_thread_init (handle_sl sql, handle_one_conn, handle_slave_io)


BitKeeper/etc/ignore:
  added *.gcda *.gcno
include/my_pthread.h:
  Added my_thread_end_wait_time
  Removed not used thread variables
mysys/my_thr_init.c:
  Add thread counters.
  Don't return from my_thread_global_end() until all threads have called my_thread_end()
  (Or a timeout (5 seconds) has elapsed)
  This fixed some valgrind warnings
  Bug#24387: Valgrind: my_thread_init (handle_sl sql, handle_one_conn, handle_slave_io)