mysql-test/r/kill.result:
  BUG#14851 test
mysql-test/t/kill.test:
  BUG#14851 test
sql/sql_class.cc:
  Debug prints are added.
sql/sql_select.cc:
  Allocation of tmp_join fixed to involve constructor (it is not related to the bug directly but might cause other problems).
  Excluded posibility of tmp_table_param.copy_field double deletion (BUG#14851).
sql/sql_select.h:
  JOINs constructor added, initialization of them fixed (it is not related to the bug directly but might cause other problems).