j2k: flatten test cases and testData directory structure

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

j2k/testData/fileOrElement/identifier/finalFieldReference.java

@@ -0,0 +1,14 @@
+//file
+class $$$$$ {}
+
+class $ {}
+
+class $$ extends $ {
+  final $$$$$ $$$;
+
+  public $$($$$$$ $$$$) {
+    $$$ = $$$$;
+  }
+  
+  public $$$$$ $$$$$$() {return $$$;}
+}

j2k/testData/fileOrElement/identifier/finalFieldReference.kt

@@ -0,0 +1,10 @@
+class `$$$$$`
+
+open class `$`
+
+class `$$`(val `$$$`: `$$$$$`) : `$`() {
+
+    public fun `$$$$$$`(): `$$$$$` {
+        return `$$$`
+    }
+}

j2k/testData/fileOrElement/identifier/keywords.java

@@ -0,0 +1,2 @@
+//statement
+int as, type, val, var, fun, is, in, object, when, trait, This;

j2k/testData/fileOrElement/identifier/keywords.kt

@@ -0,0 +1,11 @@
+val `as`: Int
+val type: Int
+val `val`: Int
+val `var`: Int
+val `fun`: Int
+val `is`: Int
+val `in`: Int
+val `object`: Int
+val `when`: Int
+val `trait`: Int
+val `This`: Int

j2k/testData/fileOrElement/identifier/withDollar.java

@@ -0,0 +1,2 @@
+//expression
+$$$$$

j2k/testData/fileOrElement/identifier/withDollar.kt

@@ -0,0 +1 @@
+`$$$$$`