Starting work on opening tables.
Merge branch 'master' of marzojr.github.com:marzojr/tp_ia_reversi

Conflicts:
	src/reversi.cpp
	src/reversi.h
Makefile: Adding warning for C-style casts.
main.cpp: strcmp returns zero if equal.
minmax.cpp: Updating for changes to heuristic eval, and adding leaf-detection.
opening.cpp: Moves also need to be reflected.
reversi.*: Made oppositeColor constexpr. Movement_t::toString converts fields to int.
Implemented constructor from parent + movement. Made tables in State_t::expand static.
Merge branch 'master' of marzojr.github.com:marzojr/tp_ia_reversi