Move static queue for engine writing to engine struct
Continue refactoring of option stuff (search for option_nb)
Make _ex versions the default (more object oriented).
Remove most uci option commands. Refer directly to Uci->option. It will make the code more 
readable.
Replace "append_option" by "insert_option".
Inifile handling. 
Refactor removinging of trailing EOL and white space from string (see util.c and ini file parsing). 
ML's utility