set null bits on delete+insert

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca

  redo extra verification code so that tupkeyref is reset just before tupkeyreq

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca

  bug in interpretedupdate (used for auto-increment) that made TUPKEYREF be sent twice
  this was however "normally" shadowed, but made LQH crash when LCP was about to start

  Increase size of memory channel

  fix release iterator

  fix commit triggers with DD but not using DD

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca

- put page of deleted row last in list

clean up varsize
by putting varpart ref "inside" fixpart instead of "optionally" at the end

into  ymer.(none):/usr/local/mysql/mysql-5.1-telco-gca

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.1-telco-gca

into  ymer.(none):/usr/local/mysql/mysql-5.1-telco-gca

into  ymer.(none):/usr/local/mysql/mysql-5.1-telco-gca

In a certain code path the NDBD could loop infinitely in the lock queue.

NdbTransaction::executeAsynch() was not implemented. Add implementation.

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca

  add new functions for (easier) using NdbRestarter

  add (auto) testcase for bug#28023

  fix COPY_ROWID return value

  make sure that copy tuple is released in all cases

  testcase only
  new pseudo column NDB$COPY_ROWID

  tupscan misses uncommitted inserts by own transaction
    let tupkeyreq handle dirty/savepoint

  also siable diskscan as temporary fix for bug#27776

into  perch.ndb.mysql.com:/home/jonas/src/51-telco-gca