generic life cycle

gistfile1.txt

* Steps are calls to other things to do stuff.  Steps cannot be called in parallel
* Each phase relies on the output from the previous phase
* Cancellations can happen at any time during the phases from something external
* I think that an abort at any phase should drop down to Stop and continue on
* Stop and Finish phases should clean up things created in previous phases
    ** If Stop/Finish run without one of the previous phases running, then it should
       not panic if that resource is not available to clean up

Phases:
    Prepare
        Step1()
        Step2()
    Build
        Step3()
    Run
        Step4()
        Step5()
    Stop
        Step6()
    Finish
        // These steps would be clean up and finalization of previous phases
        Step7()
        Step8()