mysys/my_getopt.c:
  Fixed two bugs in my_getopt:
  
  - argc was decremented twice when type was GET_BOOL and short
    option was used. This caused all GET_BOOL -type short-options
    to malfunction.
  
  - Fixed a bug in argv handling. Any program that used argv directly
    without checking argc first, tried to use (already handled) options
    as non-option arguments, after all true non-option arguments were
    handled. At least mysqldump was affected by this bug.