Docs/manual.texi:
  Fix for release
include/my_pthread.h:
  Fix for SAFE_MUTEX for windows
include/myisammrg.h:
  Fix for empty MERGE tables
myisam/ft_stopwords.c:
  Free used memory
myisammrg/myrg_open.c:
  Fix for empty MERGE tables
myisammrg/myrg_queue.c:
  Fix for empty MERGE tables
myisammrg/myrg_rfirst.c:
  cleanup
myisammrg/myrg_rkey.c:
  cleanup
mysys/my_thr_init.c:
  Fix SAFE_MUTEX for windows
mysys/my_winthread.c:
  Fix SAFE_MUTEX for windows
mysys/thr_mutex.c:
  Fix SAFE_MUTEX for windows
sql/ha_myisammrg.cc:
  Fix for empty MERGE tables
sql/mysqld.cc:
  Fix type