sql/mysqld.cc:
  spelling fixed
sql/sql_base.cc:
  spelling fixed
sql/sql_delete.cc:
  spelling fixed
sql/sql_parse.cc:
  comments added
sql/sql_prepare.cc:
  comments added
sql/sql_update.cc:
  spelling fixed
sql/sql_view.cc:
  spelling fixed
sql/table.cc:
  spelling fixed