Added catch for (example) WL#1234 into bk commit subjects

propogation works only once (prepared statements)".

- 'ps_10nestset' uses a "nested set" approach for an employee 
  hierarchy, then does arithmetic on the "salary" field;
  (soon) to be extended by inserts / deletes which imply
  mass updates on the "l"/"r" fields showing the set inclusion,
- 'ps_11bugs' will get (some of ?) those bug DB entries which
  refer to prepared statements, but whose number does not appear
  in a test file comment - so it will also be extended.

  A fix for Bug#6042 "constants propogation works olny once (prepared
  statements)": reset item->marker in Item::cleanup, as it's used
  in propogate_cond_constants. No test case as the only way I could
  come up with to show the problem is EXPLAIN, and EXPLAIN is painful
  to use in the test suite.

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

into a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-4.1

section, which had gotten somewhat out-dated.

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b5382

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

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

Fixes bug with tableImpl with blobs not being initialized properly w.r.t pointer to blob tableImpl in column
    added blob to test to see that blob tables don't show up in show tables
    auto increment setting need not fetch blob tables (will otherwise generate error during table creation)
    moved addBlobTables out of fetchGlobalTableImpl to get_local_table_info
    changed addBlobTables to start from last column and break if all blobs added
    also addBlobTables will return -1 if failed (typically getTable)
    changed to using get_local_table_info with internal table name where applicable for efficiency
    added option to get_local_table_info wether to fetch blob tables or not
    getTable always fetches the blobtables
    moved addBlobTables to get_local_table_info to always be called, even if main table goes to cache only

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.gconcat

(Bug #4315: GROUP_CONCAT with ORDER BY returns strange results for TEXT fields
 Bug #5564: Strange behaviour with group_concat and distinct
 Bug #5970: group_concat doesn't print warnings)

change, and perform it (the new Item changes registry).

into mysql.com:/media/sda1/mysql/mysql-4.1-hook

crashes server (prepared statements)": the bug was that all boolean
items always recovered its original arguments at statement cleanup 
stage.
This collided with Item_subselect::select_transformer, which tries to 
permanently change the item tree to use a transformed subselect instead of
original one.
So we had this call sequence for prepare:
mysql_stmt_prepare -> JOIN::prepare -> 
Item_subselect::fix_fields -> the item tree gets transformed ->
Item_bool_rowready_func2::cleanup, item tree is recovered to original
state, while it shouldn't have been;
mysql_stmt_execute -> attempts to execute a broken tree -> crash.
Now instead of bluntly recovering all arguments of bool functions in 
Item_bool_rowready_func2::cleanup, we recover only those
which were changed, and do it in one place.
There still would exist a possibility for a collision with subselect
tranformation, if permanent and temporary changes were performed at the 
same stage.
But fortunately subselect transformation is always done first, so it 
doesn't conflict with the optimization done by propogate_cond_constants.
Now we have: 
mysql_stmt_prepare -> JOIN::prepare -> subselect transformation 
permanently changes the tree -> cleanup doesn't recover anything, 
because nothing was registered for recovery.
mysql_stmt_execute -> JOIN::prepare (the tree is already transformed, 
so it doesn't change), JOIN::optimize -> 
propogate_cond_constants -> temporary changes the item tree 
with constants -> JOIN::execute -> cleanup -> 
the changes done by propogate_cond_constants are recovered, as
they were registered for recovery.

mysqld_multi via mysqld_multi.server.sh

was given.

into a193-229-222-2.elisa-laajakaista.fi:/home/my/bk/mysql-4.1

- Made some of the warnings under --verbose only
- Added possibility to add mysqladmin= under groups [mysqldN]
  mysqladmin=... is no longer mandatory under [mysqld_multi]
- Made 'start', 'stop' and 'report' commands truly case-insensitive
- Some other common places code merge and cleanup

into sanja.is.com.ua:/home/bell/mysql/bk/work-ps-4.1

registration changing ITEM_SUM arguments added

  If one tries to drop an InnoDB table without an .ibd file, print to .err log that we DID remove the table from the internal data dictionary of InnoDB, and return DB_SUCCESS so that MySQL will delete the .frm file; the drawback in this is that then DROP TABLE returns success, and the user is not alerted; maybe it could return a warning

  Look for 'client_test' in tests/ not bin/
make_binary_distribution.sh:
  Copy 'client_test' into the dist

into a193-229-222-2.elisa-laajakaista.fi:/home/my/bk/mysql-4.1

binary for mysqld_multi was not found. This is because it is
possible to define one under each mysqldN group separately.
Bailing out if mysqld binary is not found at all.

Added option --silent to turn off warnings.

doesn't need to have it's own recovery mechanism.

into hundin.mysql.fi:/home/heikki/mysql-4.1

  Fix bug #5975 about UTF-8 chars and prefix indexes; do not print warnings if a column prefix is > 255 bytes

  To make client_test work as mysql-test-run test case, needs to install it

into mysql.com:/media/sda1/mysql/mysql-4.1-5748-anew

crashes mysqld": implementation for a generic item tree modifications
registry. Every item tree modification which should be rolled back for
subsequent execution of a prepared statement or stored procedure should
be saved in the registry. All such modifications are rolled back at once
during cleanup stage of PS.
Actual fix for the bug just adds a call to register modifications to
convert_constant_item.
Post review fixes implemented.