Updates the forest editor tooling to utilize the new sets, and adjusts the creation of new Brushes in the forest editor to have user select a target module first.
This ensures all a module's brushes are grouped into the new ForestBrushGroup class which auto-registers into the ForestBrushSet, thus allowing modules to have their own sets of brushes that automatically hook into the editor workflow.
- 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
- Prevent stack corruption in a few places
- Use correct type in printfs
- Reduce type conversions in EngineApi & dAto*
- Fix compilation on GCC
- Tidy up code
