Renamed *.jet to *.kt in test data of JetPsiCheckerTest.

idea/testData/checker/Properties.kt

@@ -0,0 +1,28 @@
+ var x : Int = 1 + x
+   get() : Int = 1
+   set(value : <error>Long</error>) {
+      $x = value.toInt()
+      $x = <error>1.toLong()</error>
+    }
+
+ val xx : Int = <error>1 + x</error>
+   get() : Int = 1
+   <error>set(value : <error>Long</error>) {}</error>
+
+  val p : Int = <error>1</error>
+    get() = 1
+
+class Test() {
+    var a : Int = 111
+    var b : Int get() = $a; set(x) {a = x; $a = x}
+
+   {
+    <error>$b</error> = $a
+    $a = <error>$b</error>
+    a = <error>$b</error>
+   }
+   fun f() {
+    <error>$b</error> = $a
+    a = <error>$b</error>
+   }
+}