mysql-test/r/ndb_autodiscover.result:
  Added test cases to check that SHOW TABLES  only show tables in the selected  db.
mysql-test/t/ndb_autodiscover.test:
  Added test cases to check that SHOW TABLES  only show tables in the selected  db.
sql/ha_ndbcluster.cc:
  Only find files for the current db
  Only add files to files list which can be created i.e has a valid frm blob. This prevents NDB$BLOB tables and tables created from NdbApi to show up.