JET-16 Check property initializers as parts of the primary constructor's body

idea/testData/checker/Constructors.jet

@@ -31,4 +31,21 @@ class WithPC1(a : Int) {
 
 class Foo() : <error>WithPC0</error>, <error>this</error>() {
 
-}
+}
+
+class WithCPI_Dup(<error>x : Int</error>) {
+  <error>var x : Int</error>
+}
+
+class WithCPI(x : Int) {
+  val a = 1
+  val b : Int = $a
+  val xy : Int = x
+}
+
+class NoCPI {
+  val a = <error>1</error>
+  var ab = <error>1</error>
+    get() = 1
+    set(v) {}
+}