Inline GTO::FmtError to avoid multiple definition error.
Fix a bug in Dealer::Deal where we're comparing the possible matchups
against the wrong range of hands.
Expand the hands in Dealer:Deal into post-flop hands so we can test
directly if two hands conflict or not.  It also allows us to get rid
of Dealer::Sample although we're using more memories.  It allows
around 33% speedup.
Merge branch '5bet_dealer'

Conflicts:
	5bet.cc