SupSuper/OpenXcom — pull request #217 by karvanit (2012-11-24 09:56:03+00:00)
Title: Propagate const through the code

- All rules are now accessed as const where possible.
- Avoided unnecessary copying of some lists.
- Removed ineffective const declarations for pointer return types. A pointer can point to a const object ```const Object *ptr``` and ```Object const *ptr```. Or it can be const itself ```Object *const ptr```. Pointers that are returned from functions are returned by value, and so can't really be const themselves (we get a copy anyway).