Merge poseidon.ndb.mysql.com:/home/tomas/mysql-5.0

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.1-new-ndb


sql/ha_ndbcluster.cc:
  manual merge af packported code to 5.0, use local copy
sql/handler.h:
  manual merge af packported code to 5.0, use local copy
sql/sql_update.cc:
  manual merge af packported code to 5.0, use local copy