Added ROW_RESULT to switchs(for documentation purposes)


sql/filesort.cc:
  For documentation purposes
sql/item_cmpfunc.cc:
  For documentation purposes
sql/item_func.cc:
  For documentation purposes
sql/item_sum.cc:
  For documentation purposes
sql/log_event.cc:
  For documentation purposes
sql/sql_lex.cc:
  For documentation purposes
sql/sql_select.cc:
  For documentation purposes
sql/sql_show.cc:
  Bug fix: for SHOW STATUS (when ssl is used)