types, migrated mysqld.cc to use my_getopt.


include/my_getopt.h:
  
  Added missing types; GET_INT, GET_UINT, GET_ULONG, GET_ULL
mysys/my_getopt.c:
  - Fixed a bug in processing short options; variable value was set
    wrongly after processing it in get_one_option(), when it needed
    to be done before it.
  - Fixed a bug in setting variable values; if type was OPT_ARG,
    a call without argument destroyed the default value
  - Added functionality for new GET_* types.
sql/mysqld.cc:
  Changed mysqld.cc to use my_getopt.