crash for, e.g., NDB):
Adding new function my_b_copy_to_file() to copy an IO_CACHE to a file.


include/my_sys.h:
  Adding new function my_b_copy_to_file() to copy an IO_CACHE to a file.
mysys/mf_iocache2.c:
  Adding new function my_b_copy_to_file() to copy an IO_CACHE to a file.