This is not relevant for any of the stock movies as they use separate sound files, we need to be aware of mods using the streaming sound capabilities of MVE and SMK.
While in GZDoom this uses the IWAD name, the same approach is a lot more problematic here because of name duplications with far more incompatible content.
So this allows targeting a group of base games instead of one specific version.
To allow cumulative loading without interfering with other ports, Raze will now look for files called xxxx-raze.def, where xxxx is the default .def name (e.g. duke3d-raze.def for Duke3D.) and if that is found, cumulatively load all same-named files - it will fall back on the default name if no such thing is found.
-def still overrides both and will not cumulatively load.
* This works for Raze's running directory, but is not pulling in autoexec.cfg files from subdirectories from Raze's running directory (Duke, Duke.Duke) or paths where game content resides (Steam, for instance).
* Partially addresses #110
* Remove joystick scaling from `CONTROL_GetInput()`.
* Store turnspeed as constant at top of `processMovement()` and use it for joystick yaw/pitch scaling. This adds the advantage of having the out-of-box turning speed match the keyboard's turn speed and also attenuates when the player is not running.
* When interpolating on the initial setup, when binangle reached an overflow point when going lower than zero, the engine was spinning the player around clockwise to the new angle (2047, for instance).
* Interpolating after casting as uint64_t with a workflow similar to the original games, the issue went away.
* Cleaned up other interpolation functions to be of a consistent workflow.
* Scale keyboard input turning down to degree speeds.
* Uplift some remaining Q16.16 code in `applylook()` to full BAM precision.
* Move static calculations of aim and look speeds for `sethorizon()` back into function since GameTicRate isn't set right before calculation is done.
* Simplify the angle target setup back to a basic value like before.
* Repair SW interpolation issues of weapon sprite drawer when rotating left/right.
* Fix SW death horizon constant values following change of horizon center to 0.
