Restructure "Safe Delete" test data directories

Conflicts:
	generators/org/jetbrains/jet/generators/tests/GenerateTests.java

idea/testData/safeDelete/deleteProperty/javaPropertyWithKotlin/middleJava1.kt

@@ -0,0 +1,10 @@
+trait B {
+    public val foo: String
+}
+
+class D: B {
+    public override val foo: String
+        get() {
+            return "D"
+        }
+}