run command to create system tables after startsystem

A few times a system has failed to startup correctly because postConfigure didn't run to successful completion due to some install issue. When this happens, user might correct the problem then run "mcsadmin startsystem" to bring the system up. But when it done this way, the System Catalog isn't created and all create table will fail.
This enhancement will allow the system to come up in a functional state if this happens, postConfigure doesn't finished and user then does a startSystem.

If the system catalog already exist when this command is done, nothing is effected. Both ProcMgr and the script checks if the system catalog already exist and it will bypass running the script.