JET-6 Perform checks for primary and secondary constructors (In progress): class having a stateful property must have a constructor

idea/testData/checker/Constructors.jet

@@ -43,7 +43,7 @@ class WithCPI(x : Int) {
   val xy : Int = x
 }
 
-class NoCPI {
+class <error>NoCPI</error> {
   val a = <error>1</error>
   var ab = <error>1</error>
     get() = 1

idea/testData/checker/ForRangeConventions.jet

@@ -35,7 +35,7 @@ class NotRange5() {
 
 class AmbiguousHasNextIterator {
   fun hasNext() : Boolean
-  val hasNext : Boolean
+  val hasNext : Boolean get() = false
   fun next() : Int
 }
 
@@ -44,7 +44,7 @@ class NotRange6() {
 }
 
 class ImproperIterator4 {
-  val hasNext : Int
+  val hasNext : Int get() = 1
   fun next() : Int
 }
 

idea/testData/checker/NamespaceQualified.jet

@@ -31,7 +31,7 @@ class Iteratee<in I, out O> {
   abstract fun done() : O
 }
 
-class Sum : Iteratee<Int, Int> {
+class Sum() : Iteratee<Int, Int> {
   override fun process(item : Int) : Iteratee<Int, Int> {
     return foobar.done<Int>(item);
   }

idea/testData/checker/PrimaryConstructors.jet

@@ -0,0 +1,14 @@
+class <error>X</error> {
+  val x : Int
+}
+
+class Y() {
+  val x : Int
+}
+
+class Y1 {
+  val x : Int get() = 1
+}
+
+class Z : Y<error>()</error> {
+}