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/controlFlowAnalysis/kt610.jet

@@ -1,6 +1,6 @@
 //KT-610 Distinguish errors 'unused variable' and 'variable is assigned but never accessed'
 
-namespace kt610
+package kt610
 
 fun foo() {
     var <!UNUSED_VARIABLE!>j<!> = 9  //'unused variable' error