Changed 'send_file_to_server' to use less stack (Fixed replication problem on OSF1).


Docs/manual.texi:
  Changelog
libmysql/libmysql.c:
  Changed 'send_file_to_server' to use less stack (Fixed some problems in threaded applications)
mysql-test/mysql-test-run.sh:
  Fixed --sleep option
sql/mini_client.cc:
  Changed 'send_file_to_server' to use less stack (Fixed replication problem on OSF1).
sql/mysqld.cc:
  Destroy query cache properly
sql/sql_cache.cc:
  Fixed bug in FLUSH QUERY CACHE