j2k: flatten test cases and testData directory structure

Move j2k/test/tests -> j2k/tests, j2k/test/testData -> j2k/testData

j2k/testData/fileOrElement/field/valOrVar.java

@@ -0,0 +1,28 @@
+class A {
+    private final int field1 = 0;
+    private int field2 = 0;
+    private int field3 = 0;
+    final int field4 = 0;
+    int field5 = 0;
+    private int field6;
+    private int field7;
+    private int field8;
+    private int field9;
+    private int field10;
+    private int field11;
+
+    A(int p1, int p2, A a) {
+        field6 = p1;
+        field7 = 10;
+        this.field8 = p2;
+        this.field9 = 10;
+        if (p1 > 0) {
+            this.field10 = 10;
+        }
+        a.field11 = 10;
+    }
+
+    void foo() {
+        field3 = field2;
+    }
+}