Bug 5984: Run Abort dialog doesn't appear when aborted run was started with Init button
Bug Number: 5984
Release notes (y/n): Yes
For Release Nums: 7.2 (or maybe 7.1.1).

This fix involved two changes:

(1) A provision introduced in 2006 to prevent the Run Abort dialog from 
being shown TWICE when MRM is used was preventing that dialog from being
shown after starting a run by clicking the "Init" button.  The fix was to
increment the global (static) "run number" when the "Init" button is clicked.
See change in QtRunControlDlg::stepHandler().

(2) We were explicitly (deliberately) refraining from generating the green
"RUN ABORTED" diagnostic messages if the run had been started as a single
"Step" run.  We're now deciding that we DO want to generate those messages
in that case, but they won't show the elapsed time, as that's not meaningful
when manually stepping through the run.  See change in [Sim] RunInfo::
abortRun (bool notifyUser).

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