- Fix a bug causing a crash when doing an ALTER TABLE
  (because create_info->alias is NULL)

added:
  storage/connect/mysql-test/connect/r/occur.result
  storage/connect/mysql-test/connect/r/xcol.result
  storage/connect/mysql-test/connect/t/occur.test
  storage/connect/mysql-test/connect/t/xcol.test
modified:
  storage/connect/ha_connect.cc