Update Wolfenstein: Enemy Territory(ET: Legacy) version to 2.83.2, fix Omni-bot initialization.
Fix game controller, and add game controller configure on launcher CONTROLS tab.
Add more alphabet on-screen buttons, and add cs16-client and source-engine on-screen button theme.
Add load external game library support on Xash3D.
Add built-in soft keyboard support.
Update RealRTCW version to 5.2, version 5.1 will be removed on next release.