[Opensim-dev] Making AllowScriptCrossing = true by default

[Bengt Falke]

I think this is a great idea as it would make it easier for scripted vehichles like yachts to work at sim crossings with different owners. The very few using other script engines can of course turn this on instead of having to try to convince all that it is fairly safe to turn it on. 

I know there is a big interest in making smooth and working sim crossings for scripted objects so I think it is wise to try to simplify that...