Benchmark: timing 100000 iterations of FindNth_Grantm, FindNth_Jasper,
FindNth_Pg, FindNth_Roger, FindNth_Ysth, FindNth_Zaxo_Array,
FindNth_Zaxo_Split...

FindNth_Grantm:  3 wallclock secs (3.50 usr +  0.00 sys =  3.50 CPU)
@ 28571.43/s
FindNth_Jasper: 379 wallclock secs (376.66 usr +  0.06 sys = 376.72 CPU)
@ 265.45/s
FindNth_Pg:  4 wallclock secs (3.91 usr +  0.00 sys =  3.91 CPU)
@ 25595.09/s
FindNth_Roger: 21 wallclock secs (21.03 usr +  0.00 sys = 21.03 CPU)
@ 4754.66/s
FindNth_Ysth: 21 wallclock secs (20.95 usr +  0.00 sys = 20.95 CPU)
@ 4772.36/s
FindNth_Zaxo_Array: 19 wallclock secs (18.53 usr +  0.00 sys = 18.53 CPU)
@ 5396.36/s
FindNth_Zaxo_Split: 14 wallclock secs (14.51 usr +  0.02 sys = 14.53 CPU)
@ 6882.31/s