Fixed compiler warnings

client/mysqlslap.c:
  Fixed compiler warnings
mysql-test/suite/maria/r/maria.result:
  Test case for LP#614265
mysql-test/suite/maria/t/maria.test:
  Test case for LP#614265
mysql-test/suite/pbxt/t/skip_name_resolve-master.opt:
  Ensure that we get restart before test (as test uses show processlist)
sql/handler.cc:
  Added cloned marker if clone was called (for safety checks & debugging)
sql/handler.h:
  Added cloned marker if clone was called (for safety checks & debugging)
storage/maria/ha_maria.cc:
  In clone call, set file->trn if cloned file had this set. This is needed as maria_create_trn_for_mysql() and thus file->trn is never set for cloned table.
  Ensure that file->trn is properly reset after calls to repair/check/zerofill.
  Increment locked table count if file->trn is set (as we decrement this in the unlock call)
tests/mysql_client_test.c:
  Fixed compiler warnings