-Wmissing-declarations enforces that every function (except for static
functions) must be declared separately before it's defined. This
essentially enforces that every function must be either static, or
declared in a header elsewhere.
This helps the optimizer, as it can do a better job of inlining if it
knows that a function won't be used outside of a given file. It also
helps -Wunused-function (which is enabled by -Wall) find more unused
functions.
Note that Clang spells this option -Wmissing-prototypes, which
confusingly is the name of a related but different warning option under
GCC.
* refactored model loading code based on code from dev-models
* support new model format V2 (without LOD levels)
* removed LOD levels support in CEngine and from model files
* preparations for new model format V3:
- support for multiple meshes in one model file
- support for saving crash spheres and shadow spots
- removed all direct dependencies on CEngine enum values
- quantized model rendering states to new flags and enums
- new class CModelManager
- rewritten engine object structure in CEngine
- created shared model data instead of separate objects per each
model instance
- minor refactoring