Begin to add facilities to ignore bogus settings from saved games
Write a full set of macros for ignore_saved_game_settings.
Typo & comment fix
Make the macros for ignore_saved_game_settings "network-aware".
Implement "ignore_saved_game_settings".  Makes testing new pak settings *possible*.  Massive edits required.
Merge branch 'ncn-devel' into prettier-cities-2