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/kt510.jet

@@ -1,6 +1,6 @@
 //KT-510 `this.` allows initialization without backing field
 
-namespace kt510
+package kt510
 
 public open class Identifier1() {
     var field : Boolean

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt607.jet

@@ -1,6 +1,6 @@
 //KT-607 Val reassignment is not marked as an error
 
-namespace kt607
+package kt607
 
 fun foo(a: A) {
     val o = object {

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt609.jet

@@ -1,6 +1,6 @@
 //KT-609 Analyze not only local variables, but function parameters as well in 'unused values' analysis
 
-namespace kt609
+package kt609
 
 fun test(var a: Int) {
     a = <!UNUSED_VALUE!>324<!> //should be an 'unused value' warning here

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

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt843.jet

@@ -1,6 +1,6 @@
 //KT-843 Don't highlight incomplete variables as unused
 
-namespace kt843
+package kt843
 
 fun main(args : Array<String>) {
     // Integer type