Scripting: Implemented System.RuntimeInfo

Implemented a read-only System.RuntimeInfo String property that returns
the information formerly displayed when pressing Ctrl+V in a game.
Replaced the old Ctrl+V shortcut with Ctrl+Alt+V for newer games. The
debug implementation of debug(1, 0) still works in debug mode. The
System.RuntimeInfo property exists in debug or release mode. The user
may implement the display of this info however s/he likes.