Restructure "Safe Delete" test data directories

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

idea/testData/safeDelete/deleteProperty/kotlinProperty/implement3.kt

@@ -0,0 +1,13 @@
+trait A {
+    var foo: String
+}
+
+class B: A {
+    override var <caret>foo: String
+        get() {
+            return "B"
+        }
+        set(value: String) {
+            println()
+        }
+}