main: change check_index to allow negative values ... use them for
negative look behind
main: change set_hash_option so it returns if option is used or not
wxItemContainer: document methods and update check_index usage
wxRadioBox: document methods and update check_index usage
wxToolBarBase: document methods and update the
(add|insert|prepend)_control functions.
wxBookCtrl: document methods and update check_index usage
wxAuiBook: document methods and update check_index usage
wxStatusBar: document methods and update check_index usage
massive commit, add fixes for rdoc parser, add some new methods,
document others and fix check_index usage