Update to scaled 10m air rifle target generator

[ishoottrap]

All,

I've added the option to generate targets with correctly scaled scoring rings. Since the pellet size does not decrease with distance, the scoring rings must be converted to inside-out where a touch results in the lower score:

http://home.comcast.net/~scot_for_sale/ ... index.html

Please let me know if you have any questions/issues.

-Scot