[TEST] Migrate duplicating javac tests to new test runners

Also minimize scope of DiagnosticUsingJavac tests to
 `compiler/testData/diagnostics/tests/javac`. This is fine since
 javac compilation mode is still not finished and no one not going to
 support it

compiler/testData/diagnostics/tests/javac/qualifiedExpression/visibleClassVsQualifiedClass.kt

@@ -0,0 +1,57 @@
+// FILE: a/b.java
+package a;
+
+public class b {
+    public void a_b() {}
+}
+
+// FILE:some/a.java
+package some;
+
+public class a {
+    public static class b {
+        public void some_ab() {}
+    }
+}
+
+// FILE: c1.kt
+package other
+
+class a {}
+
+fun test(<!UNUSED_PARAMETER!>a_<!>: a.<!UNRESOLVED_REFERENCE!>b<!>) {
+    val <!UNUSED_VARIABLE!>a_2<!> = a.<!UNRESOLVED_REFERENCE!>b<!>()
+}
+
+//FILE: c2.kt
+package other2
+
+class a {
+    class b {
+        fun other2_ab() {}
+    }
+}
+
+fun test(_ab: a.b) {
+    _ab.other2_ab()
+
+    val _ab2 = a.b()
+    _ab2.other2_ab()
+}
+
+// FILE: c3.kt
+package some
+
+fun test(_ab: a.b) {
+    _ab.some_ab()
+
+    val _ab2 = a.b()
+    _ab2.some_ab()
+}
+
+// FILE: c4.kt
+package a
+
+fun test(_b: b) {
+    _b.a_b()
+}