Implemented ODIDMediaEngine live sim persistency & auto-reset functionality

The ODIDMediaEngine can now utilize previously-created live sims from the
 ME's live sim table.

The live simulator now has the ability to reset itself after a given
 period of time (taking itself back to pre-start condition). Added the code
 to the ODIDMediaEngine/DataSource to cancel/reset the sim's autoreset timer
 when requests are processed.

Added a report_range_when_active() utility function and some misc start/end
 time retrieval functions to the live sim.

Ran more live tests and verified availableSeekRange accuracy, auto-stop,
 and auto-reset functionality.