SHOW CREATE TABLE fails
Addition to the fix: report db name + table name instead of table path.
This solves embedded merge test failure.


mysql-test/r/merge.result:
  BUG#26976 - Missing table in merge not noted in related error msg +
              SHOW CREATE TABLE fails
  Addition to the fix: report db name + table name instead of table path.
sql/ha_myisammrg.cc:
  BUG#26976 - Missing table in merge not noted in related error msg +
              SHOW CREATE TABLE fails
  Addition to the fix: report db name + table name instead of table path.