crash for, e.g., NDB):
Submitting patch to base64_decode() adding extra parameter.


include/base64.h:
  Adding parameter to base64_decode() to return the position just after
  the string that was decoded.
mysys/base64.c:
  Adding comment to base64_decode().
  Adding parameter to base64_decode() to return the position just after
  the string that was decoded.
sql/share/errmsg.txt:
  Adding error message.
storage/ndb/src/mgmapi/mgmapi.cpp:
  Parameters to base64_decode() changed.
unittest/mysys/base64-t.c:
  Parameters to base64_decode() changed.