include/m_string.h:
  UNIXWare removal
include/my_global.h:
  UNIXWare removal.
include/my_no_pthread.h:
  UNIXWare removal
include/my_pthread.h:
  UNIXWare removal
mysys/my_init.c:
  UNIXWare removal
mysys/my_pthread.c:
  UNIXWare removal