Removes duplicated offset calculations from Game and use whatever the Camera class returns.
This keeps the eye position nicely in sync, and gets rid of duplicated code.
Camera's near-plane will be hard-coded to 0.1 on all non-Android platforms. The upper-bound of this setting has been reduced to 0.25, as 0.5 is just way too high.
GenericCAO::getPosition() did not take the camera offset into account
LocalPlayer attachment cleanup: Use sane getParent() function
Make that getPosition() (GenericCAO and LocalPlayer) always return the absolute position
Safety-guards for CSM callbacks to abort on a bad implementation
Only run callbacks when the mods are loaded (and with it: builtin)
Duplication checks inside constructors
