Make testcase pass on systems with lower_case_table_names=2.

Generally, we should use only small letters for table names 
but here it's easier to fix with one --replace.

mysql-test/t/join_cache.test

@@ -161,6 +161,7 @@ SELECT Country.Name, Country.Population, City.Name, City.Population
 CREATE INDEX City_Population ON City(Population);
 CREATE INDEX City_Name ON City(Name);
 
+--replace_result city City
 ANALYZE TABLE City;
 
 EXPLAIN