Reset missed heartbeat count on receipt of signal from node.

This fixes a bug where that under high network load, the heartbeat packets could be
delayed, causing the appearance of node failure (due to lost heartbeats).

into  mysql.com:/home/stewart/Documents/MySQL/5.0/main

into deer.(none):/home/hf/work/mysql-5.0.10839

into deer.(none):/home/hf/work/mysql-5.0.10839

into mysql.com:/space/my/mysql-5.0

into deer.(none):/home/hf/work/mysql-5.0.10839

into mysql.com:/space/my/mysql-5.0

into  mysql.com:/home/jonas/src/mysql-5.0-push

into  mysql.com:/home/jonas/src/mysql-5.0-push

into  mysql.com:/home/jonas/src/mysql-5.0

  fix bug introduced in alter table

into  mysql.com:/usr/home/bar/mysql-5.0

  After backporting from 5.0 fix.
  There is no an extra argument in 4.1.

into  mysql.com:/home/jonas/src/mysql-5.0-push

into  mysql.com:/home/jonas/src/mysql-5.0-push

into  c-450ae253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/mysql-5.0

into  c-450ae253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/mysql-4.1

into mysql.com:/space/my/mysql-5.0-build

into  mysql.com:/home/jimw/my/mysql-5.0-clean

  they're not needed outside of the source tree (BUG#12057)
- Removed some more unneeded files from "make install" along the way

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

- do not discover temporary files and make them visible

This push includes the clone tag.

cursors. This should fix Bug#11813 when InnoDB part is in 
(tested with a draft patch).
The idea of the patch is that if a storage engine supports
consistent read views, we open one when open a cursor,
set is as the active view when fetch from the cursor, and close
together with cursor close.

into  mysql.com:/home/jonas/src/mysql-5.0-push

into  mysql.com:/home/jonas/src/mysql-5.0-push

into lmy002.wdf.sap.corp:/home/georg/work/mysql/prod/mysql-4.1

into  mysql.com:/home/jonas/src/mysql-5.0-push

into  mysql.com:/home/jonas/src/mysql-5.0

  fix error code to avoid clash with 5.0/5.1

  add testcase to autotest