Improve the speed of the unit test
Improve the speed of the unit test

This commit changes the way of testing 8-card and 9-card hands.
Instead of iterating 8 choose 5 (or 9 choose 5) to find the best hand
from the Kev's evaluator, it uses 8 choose 1 (or 9 choose 1) to find
the best hand using a smaller size PH evaluator.

HenryRLee/PokerHandEvaluator,HenryRLee/PokerHandEvaluator,HenryRLee/PokerHandEvaluator