Remove mtr_report_test_failed

oportunity to check if any other process fails during this.
Add possiblitiy to store "user_data" in a Safeprocess
Add function to get pid from a SafeProcess

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

Fix comments

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

datadir can be saved in case of constantly failing servers
Remove datadirs each time all servers have been stopped thus limiting
the size of vardir.
The datadirs of failed tests have been saved and that should be
enough to diagnose any failures

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-rpl

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

Ie don't treat cluster_config.mysqld.1.1 as a section specifying a cluster

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

directory part
 

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-rpl

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-maint2

into  mysql.com:/home/ksm/mysql/WL3754/commit-mysql-5.1-new-rpl

so it will still look the same, but makes debugging much easier

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-rpl

we don't use Unix domin sockets for connection to server