Add more diagnostics about why page reads in recovery may hang: print the number of pending pread calls

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

  Add settable variables for semi-sync replication

into mysql.com:/my/mysql-4.1

into mysql.com:/my/mysql-4.1

into mysql.com:/usr/local/home/marty/MySQL/mysql-4.1

into mysql.com:/home/jonas/src/mysql-4.1

into hundin.mysql.fi:/home/marko/k/mysql-4.1

into mysql.com:/my/mysql-4.1

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b7261

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

    changed ndb_restore test somewhat to fisrt make the tables in myisam

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b7261

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

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

into mysql.com:/home/jimw/my/mysql-4.1-clean

it's crucial to disable Nagle algorithm on client for no-reply commands
(like mysql_stmt_free) to always work fast.
Nagle algorithm instructs the sender to buffer (store) data if any 
unacknowledged data is outstanding and the size of to-send data is less than
the network segment. It was exactly the case with COM_STMT_CLOSE after 
COM_STMT_PREPARE, so the client was waiting for Nagle timer to expire or
 for ACK from the server, while the server was holding up ACK because of 
delayed acknowledgement algorithm.
The tricky part is that we have been already disabling Nagle 
algorithm (by setting TCP_NODELAY)
almost everywhere except Windows (and maybe Netware).
It is the reason why the bug was repeatable only with Windows client.

into mysql.com:/home/jimw/my/mysql-4.1-clean

lower_case_tables_names=2 is sensible. Related to Bug #7887.

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

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

  Bug#7145 Added cast to doublestore() and ARM

into mysql.com:/Users/kent/mysql/bk/mysql-4.1-perl

  Let MYSQL_CLIENT_TEST be set with command line from mysql-test-run script
mysql-test-run.sh:
  Renamed client_test to mysql_client_test
  Support --embedded-server test on installed server
mysql_client_test.test:
  Renamed client_test to mysql_client_test
  Use env var CLIENT_TEST with full name, it differs when run with --embedded-server
  Rename: mysql-test/t/client_test.test -> mysql-test/t/mysql_client_test.test

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

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

  added ndb_restore test
ndb_restore.result, ndb_restore.test:
  new file

  backported access to ndb_mgm from 5.0

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

into mysql.com:/Users/kent/mysql/bk/mysql-4.1-perl