Remove compiler warnings


mysql-test/extra/binlog_tests/mix_innodb_myisam_binlog.test:
  Fixed regex to get rid of xid= in output
mysql-test/r/mysqlcheck.result:
  Drop client_test_db if mysql_client_test fails
mysql-test/t/mysqlcheck.test:
  Drop client_test_db if mysql_client_test fails
mysql-test/t/mysqldump.test:
  Use --defaults-file instead of --defaults-extra-file to avoid reading my.cnf files
sql/event_scheduler.cc:
  Remove compiler warnings
sql/ha_partition.cc:
  Don't divide with 0 when checking current auto_increment value
sql/handler.cc:
  After merge fix
sql/mysqld.cc:
  Remove comiler warning
sql/partition_info.cc:
  After merge fix
  Fixed memory reference overrun for some wrong partition definitions
sql/sql_base.cc:
  After merge fix
  Always set *leaves in setup_tables_and_check_access() (assume argument is always given).
sql/sql_select.cc:
  Simple optimization
sql/sql_show.cc:
  Remove compiler warning
sql/sql_table.cc:
  After merge fix
storage/csv/ha_tina.cc:
  Ensure table maps are restored properly
storage/ndb/include/ndbapi/Ndb.hpp:
  Remove compiler warning