Added motorSim.cmd.  Fixed syntax of aCalcArraySize variable set.

Save userCalc enables.
Add pvHistory

New scaler database option (better calcs, but not backward compatible with autosaved calcs for standard database)

, load scans and saveData in the standard way, individually disabled user transforms, comments for pf4, more autosave examples

simulated motors; use motorUtil instead of all_com; changed the way scan and saveData databases are loaded