This resolves menu order, cleanup and close/re-open issues, as well as crashes on close.
It also modifies the look slightly to look closer to the windows menubar to keep a cohesive look regardless of platform.
A lot of instances where some function args are not actually modified in any way, meaning that it is better for performance to convert them into const references. This prevents an additional copy, which can help performance.
- Con::executef now uses a template
- All public execution functions now restore the console stack upon return
- Fixed bad parameters on some callbacks
- Reverts get*Arg behavior
