AE: Stop playing sounds when going to Suspend for all platforms (fixes #14211)
[touch] fix missing call to OnTouchGestureStart() from CGenericTouchInputHandler if only the secondary pointer moved
[WIN32] added a prepare-env script for jenkins to clean the environment a little but keep the build deps.
Merge pull request #2511 from fritsch/ae-free-sounds

AE: Stop playing sounds when going to Suspend for all platforms (fixes #14211)