GreatSyntacticShift: Syntax for function types, function literals, when and tuples

Bug:
fun loop(var times : Int) {
   while(times > 0) {
        val u : (value : Int) -> Unit = { // This arrow is confusing the lookahead
            System.out?.println(it)
        }
        u(times--)
   }
}

compiler/testData/diagnostics/tests/shadowing/ShadowVariableInNestedClosureParam.jet

@@ -1,5 +1,5 @@
 fun ff(): Int {
     var i = 1
-    { (i: Int) => i }
+    { (i: Int) -> i }
     return i
 }