BUG#22240 Upgrading from cluster 5.0 to 5.1 does not resize VARCHARS as expected. With --no-upgrade (-u) option, user can decide if ignore the upgrade, the default action is to upgrade them.


storage/ndb/tools/restore/consumer_restore.cpp:
  1)Assign the correct array type for varchar and varbinary type when creating them in NDB kernel
  2)Replace the max length defined with the real length used for var data
storage/ndb/tools/restore/consumer_restore.hpp:
  Add the "m_no_upgrade" member variable to decide if upgrading array type for var type
storage/ndb/tools/restore/restore_main.cpp:
  Add --no-upgrade(-u) option for ndb_restore to decide if upgrade array type for var data.
  The default is false, it should be used with --skip-table-check(-s) option when -u option is unused.