OpenBVE v1.8.0.2

This build fixes a few more odd issues that have been reported over the last few days after the move to 64-bit.

Change: Add Brightness function for train based animated objects.
Fix: Issue launching the 64-bit build on Windows systems lacking the Creative OpenAL redistributable.
Fix: Using a command string in a CSV object texture name could get misinterpreted.
Fix: Crash on selecting a touch element with a missing sound.
Fix: Several issues with TFOs in unexpected circumstances.

April 25, 2021