this patch is an absolutely necessary supplement of the previous patch,
the previous patch doesnot cover isnull() and isnotnull() methods' effect.

into  dev3-240.dev.cn.tlan:/home/justin.he/mysql/mysql-5.0/mysql-5.0-ndb-bj-merge

into  ymer.(none):/usr/local/mysql/mysql-5.0-ndb

into  poseidon.mysql.com:/home/tomas/mysql-5.0

When doing partial blob update with NdbBlob::writeData(), zero-padding
after the write was wrongly done, causing part of the old blob value
to be overwritten with zeros (or spaces for text field).

Fixed by only padding when needed (when writing at end of the blob).

into  production.mysql.com:/usersnfs/mjorgensen/bktrees/mysql-5.0-build

into  poseidon.mysql.com:/home/tomas/mysql-5.0

into  poseidon.mysql.com:/home/tomas/mysql-5.0-ndb-clean

added error code for failing send signal and timeout waiting for node failure

into  olga.mysql.com:/home/igor/mysql-5.0-opt

into  poseidon.mysql.com:/home/tomas/mysql-5.0

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug26661

construct references invalid name.
Derived tables currently cannot use outer references.
Thus there is no outer context for them.
The 4.1 code takes this fact into account while the 
Item_field::fix_outer_field code of 5.0 lost the check that blocks
any attempts to resolve names in outer context for derived tables.

into  mysql.com:/home/hf/work/mrg/mysql-5.0-opt

into  poseidon.mysql.com:/home/tomas/mysql-5.0-ndb-clean

into  mysql.com:/home/hf/work/mrg/mysql-5.0-opt

into  poseidon.mysql.com:/home/tomas/mysql-5.0

into  poseidon.mysql.com:/home/tomas/mysql-5.0-ndb-clean

Bug #25275 SINGLE USER MODE prevents ALTER on non-ndb tables for other mysqld nodes
- correction of part 1
    add ndb_waiter option to wait for single user mode

into  mysql.com:/home/hf/work/mrg/mysql-5.0-opt

into  mysql.com:/home/hf/work/mrg/mysql-4.1-opt

  Postfix for bug#22331.

into  pilot.blaudden:/home/msvensson/mysql/mysql-4.1-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

comp_err.c:  return ha_checksum from checksum_format_specifier() - more correct, avoid a compiler warning

into  mysql.com:/data0/mysqldev/users/tomas/mysql-5.0-maint

into  poseidon.mysql.com:/home/tomas/mysql-5.0-ndb

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mar07/stage2/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mar07/stage2/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mar07/stage2/41

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mar07/stage2/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mar07/stage2/41

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mrg0306/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mrg0306/40

into  mysql.com:/home/kent/bk/tmp/mysql-5.0-build