After merge fixes


libmysql/libmysql.c:
  Fixed a bug in prepared statements error handling introduced by me on a recent patch
mysql-test/r/delayed.result:
  Updated results
mysql-test/t/delayed.test:
  Bigger timeout needed when using --ps-protocol (don't understand why yet)
  Added output of not_flushed_dealyed_rows for easier debugging
sql/sql_base.cc:
  USE tables_share fix for prepared statements
sql/sql_prepare.cc:
  After merge fix