Fix compile bug (ambiguity apparently due to some gcc 4.6 bug)
Fix interactive_bscore::best_possible_bscore()
Fix last bug from moving metapop code to opencog/learning/moses/metapopulation
Fix moses_learning::operator() to use pbscored_combo_tree_ptr_set_cit instead of obsolete bscored_combo_tree_ptr_set_cit
Fix remaining compiling errors in moses-learning
Hope last fix for moses-learning.cc
Merge branch 'master' into fs_moses_crossover
Forgot to pass the crossover_pop_size option in fs-moses