mysql-test/r/subselect.result:
  subqueries with full text search
mysql-test/t/subselect.test:
  subqueries with full text search
sql/ha_myisam.h:
  backport Serg's fix of FT interface
sql/handler.h:
  backport Serg's fix of FT interface
sql/opt_range.h:
  backport Serg's fix of FT interface
sql/sql_select.cc:
  comment for previous patch