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/tests/org/jetbrains/jet/JetTestCaseBuilder.java

@@ -48,7 +48,7 @@ public abstract class JetTestCaseBuilder {
     }
 
     public static void appendTestsInDirectory(String baseDataDir, String dataPath, boolean recursive, final FilenameFilter filter, NamedTestFactory factory, TestSuite suite) {
-        final String extensionJet = ".jet";
+        final String extensionJet = ".jet.jet";
         final String extensionKt = ".kt";
         final FilenameFilter extensionFilter = new FilenameFilter() {
             @Override

compiler/tests/org/jetbrains/jet/checkers/JetDiagnosticsTest.java

@@ -85,7 +85,7 @@ public class JetDiagnosticsTest extends JetLiteFixture {
 
     @Override
     public void runTest() throws Exception {
-        String testFileName = name + ".jet";
+        String testFileName = name + ".kt";
 
         String expectedText = loadFile(testFileName);