New J2K: Split old j2k and new j2k tests

nj2k/testData/newJ2k/comments/commentsForConstructors.kt

@@ -0,0 +1,37 @@
+internal class A// this is a primary constructor
+@JvmOverloads constructor(p: Int = 1) {
+    private val v: Int
+
+    init {
+        v = 1
+    } // end of primary constructor body
+
+    // this is a secondary constructor 2
+    constructor(s: String) : this(s.length) {} // end of secondary constructor 2 body
+}// this is a secondary constructor 1
+// end of secondary constructor 1 body
+
+internal class B// this constructor will disappear
+(private val x: Int) // end of constructor body
+{
+
+    fun foo() {}
+}
+
+internal class CtorComment {
+    var myA: String
+
+    /*
+     * The magic of comments
+     */
+    // single line magic comments
+    init {
+        myA = "a"
+    }
+}
+
+/*
+     * The magic of comments
+     */
+// single line magic comments
+internal class CtorComment2