added tests to alter table for "large" alter tables and truncates in ndbcluster
added debug printout in restart() in ndbcluster
added flag THD::transaction.on to enable/disable transaction


mysql-test/r/ndb_alter_table.result:
  added tests to alter table for "large" alter tables and truncates
mysql-test/t/ndb_alter_table.test:
  added tests to alter table for "large" alter tables and truncates
ndb/src/ndbapi/NdbConnection.cpp:
  added debug printout in restart()
sql/ha_ndbcluster.cc:
  added support for large alter table and truncate
sql/handler.cc:
  renamed ha_recovery_logging to ha_enable_transaction
sql/handler.h:
  renamed ha_recovery_logging to ha_enable_transaction
sql/sql_class.cc:
  added flag THD::transaction.on to enable/disable transaction
sql/sql_class.h:
  added flag THD::transaction.on to enable/disable transaction
sql/sql_delete.cc:
  added disable transaction for mysql_truncate
sql/sql_table.cc:
  renamed ha_recovery_logging to ha_enable_transaction