Add .gitignore to main directory
Add ec_perf.hrl which will be needed for performance testing.
Add reltool.config
Add ec_eval.erl which will be used to calculate current values of the board.
Add ec_eval_perftest.erl to test performance of board state evaluation.
Add new types and defines to ec.hrl
Modify Makefile to compile automatically before calling the performance testing scripts.
Add some missing functions to ec_board.hrl.
Some modifications on performance testing
Removed .app file in the ebin directory from git
Add en_passant move to ec_board.erl, fix dialyzer warnings.
Fix dialyzer warnings