* 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
cleanup:
* Removed CProfile::SetUserPath (unused)
* Removed CProfile::GetUserBasedPath (unused)
* Removed CProfile::CopyFileToTemp (i have no idea why it even existed)
* Removed CopyFileListToTemp (it did the same as CopyFileToTemp but for multiple files, wasn't even fully implemented)
* removed -mod argument
* removed -datadir argument
* removed -lang argument
* removed some dead ui code
* added resource manager and file loaders (stream and SDL)
* changed interface textures location to match new directory structure
* removed CGameData for mod support
* added PhysFS support
* removed classes managed by CInstanceManager
except for CObject, CPyro, CBrain and CPhysics
because of dependencies
* refactored instance searching to use existing singleton instances of
CApplication, CEngine and CRobotMain and calling their getter
functions
- new class CModelManager
- rewritten engine object structure in CEngine
- created shared model data instead of separate objects per each
model instance
- minor refactoring