- Additional review fixes
 - remove hardcoded portnumber for memcached(s), portnumber is now generated
  by ConfigFactory.pm
 - Make it possible to configure  ndb_connectstring and max_connections in my.cnf
 - Add environement variable NDB_MEMCACHE_1_PORT holding the value
  of the port used by memcached.1, change all tests to use that env var.
 - Add more comments and print the name of the memcached being started
 - Pass the value of opt_verbose to SafeProcess->new so that args to memcached
  are printed if running mtr.pl with --verbose --verbose  
 - Use different name of log files for each memcached