Map overlay improvements:
- format improvements
- line color event support
- start event
- line strip resets based on distance
- support for unstripped CSV for certain summaries (e.g mapoverlay and file IO), configurable via XML
- stripped stats with total of zero (workaround for texture streaming stats getting set with zeros in shipping)
#ROBOMERGE-SOURCE: CL 10283452 via CL 10283453
#ROBOMERGE-BOT: (v591-10236483)
[CL 10283454 by ben woodhouse in Main branch]