restoring current senect pointer before PS rexecution (backport from 5.0)
removed spaces at  lines ends


mysql-test/r/subselect.result:
  Aggregate function comparation with ALL/ANY/SOME subselect test
mysql-test/t/subselect.test:
  Aggregate function comparation with ALL/ANY/SOME subselect test
sql/item_subselect.cc:
  removed spaces at  lines ends
  aggregate functions check during substitution made only for single row subselects
sql/item_subselect.h:
  removed spaces at  lines ends
sql/sql_prepare.cc:
  restoring current senect pointer before PS rexecution (backport from 5.0)