TBRec: Remove reference to IAtRndmGenSvc.
Migrate from IAtRndmGenSvc to IAthRNGSvc.
The code here is still flagrantly thread-unsafe, but not trying to fix that now.
Migrate from IAtRndmGenSvc to IAthRNGSvc.
The code here is still flagrantly thread-unsafe, but not trying to fix that now.