prepared for using query cache in ndb

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

  Mofidications to dump secondary and tertiary weigthts
  And some minor improvements

aligned connect string option on all cluster executables, --ndb-connectstring is now supported by all
enabled new section in my.cnf [mysql_cluster], which is read by all executables, where connect string can be put for all cluster executables

- A new flag MY_CS_CSSORT was introduced for case sensitivity.
- Item_func_regexp doesn't substiture ICASE not only
  for binary collations but for case sensitive collations as well. 

  Print a warning to the .err log if the InnoDB history list length is > 20 000 even though purge reaches the list head; this is to track corruption reported on the MySQL mailing list Nov 9, 2004
lock0lock.c:
  Let SHOW INNODB STATUS print the history list length

into mysql.com:/orca/space/pekka/ndb/version/my41

 of <parameter> IS NULL":
we must not only set Item::null_value in Item_param, but implement
Item_param::is_null() to work well with IS NULL/IS NOT NULL clauses.

  Tweak some help text.

into mysql.com:/home/dlenev/src/mysql-4.1-bg6266

into mysql.com:/home/dlenev/src/mysql-4.1-bg6439

into mysql.com:/home/cps/mysql/trees/mysql-4.1

  reverting linking ndbclisnt to mysqladmin.cc

  reverting my last fix

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

    fixed erroneous error message - set auto increment was done even if create table failed so real error message got lost behind "table not found"
    and simplified code a bit

wrong datetime values for too big argument" from 4.0 tree to 4.1 tree.

into mysql.com:/space/pekka/ndb/version/my41

  This test was moved into func_group.

properly" with main tree.

Also, Item_sum_hybrid->charset was removed as redundant,
and switched to use collation.collation instead.

into mysql.com:/home/dlenev/src/mysql-4.0-bg6439

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

into mysql.com:/space/pekka/ndb/version/my41

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

into mysql.com:/space/pekka/ndb/version/my41

the same queries.

  merge error

into poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

  new file

  post-conflict-merge fix (duplicate comment)