[WIN32] added a prepare-env script for jenkins to clean the environment a little but keep the build deps.
[win32] implement CWinEventsWin32::MessagePush
[win32] add defines for GID_ROTATE_ANGLE_TO_ARGUMENT and GID_ROTATE_ANGLE_FROM_ARGUMENT
[win32] use generic touch input (adds swipe, rotate and zoom gestures)
DEBUG: some logging
WIP
WIP
WIP